Meta Horse (Unity C#)

Meta Horse is a blockchain game about horse racing ecosystem where players can participate in and earn prize money from horse racing.

Players can purchase horses and NFT items through the marketplace system, then improve their horses' power by equipping items and using boosters. They can join races against other players and compete for game tokens as rewards.

The game includes various features such as horse borrowing, horse upgrading, guilds, leaderboards, new records, shops, live streaming, match replays, special races, PvP racing, and blockchain token withdrawals,...

For more details about the project:

https://metahorse.head-2-head.net/

https://metahorse.racing/

The project had already been in development for approximately two years before I joined. I joined the team as the sole Unity Developer, responsible for implementing new features, maintaining existing systems, improving user experience, and optimizing game performance. These optimization efforts increased FPS and reduced memory usage and build size by approximately 40–50%.

During my time on this project, I also contributed to other projects, including GOT TON, Bounty Hunters, VTO

Responsibilities include:

Sole Unity Developer.

Worked closely with the Game Designer to implement new features.
Added new environment maps.
Implemented new horses, armors, skins, and items.
Implemented new VFX and SFX.
Developed and improved UI/UX systems.
Optimized memory usage, build size, and FPS performance.
Maintained Web3 source code (React Native) related to crypto wallet integration and transactions, including MetaMask and TokenPocket.
Refactored API communication flows to improve maintainability and performance.

Fixed bugs and enhanced existing features.
Conducted Unity training sessions for Fresher-level developers.
Created technical documentation and integration guides.

Project Details:

My role: Unity Developer.
Project members: 1 Unity Developer, 1-2 BE Developers, 1 Web FE Developer, 1 Blockchain Developer, 1 Game Designer, 1-2 BrSE, 2-3 Artists, 1-2 QC.

Tech stack:

Platforms: Android, iOS, Windows (for the streaming feature)
Engine: Unity
Crypto Wallet: MetaMask, TokenPocket
Websocket: SockJS.NET
Backend & Infrastructure: Java, AWS

Bounty Hunters (Unity C#)

Bounty Hunters is an online IoT blockchain crane game.

Players take on the role of hunters, remotely operating real-world crane machines through their smartphones to win digital prizes, including tokens, NFTs,...Players can enjoy both single-player (PvE) mode and competitive PvP battles against other players.

Additionally, the game includes a real-time livestreaming system that allows players to become streamers and broadcast their gameplay directly within the game. Viewers can watch live matches, chat with other viewers, send gifts to streamers. The platform also provides a Copy Trade system, allowing viewers to follow and register for a streamer’s gameplay session. If the registered streamer wins the match, participating viewers receive rewards based on the outcome.

Overall, this was a large-scale project that underwent 3 years of development (January 2024 – June 2026) across 4 major phases, with aggressive delivery timelines and frequently changing client requirements. Beyond its core PvE and PvP gameplay, the project included numerous large-scale features such as livestreaming, chat system, AR integration, Copy Trade, Ad Monetization, Gimmick and Wish Orb systems, gacha mechanics, leaderboards, and various features, making it a highly feature-rich and technically complex product.

For more details about the project:

https://bountyhunters.app/

Responsibilities include:

Resolved critical bugs, stabilized existing systems, and implemented new gameplay features to support the on-time delivery of the Phase 2 beta release for its showcase at the Game Show Tokyo 2024.
Took primary responsibility for the Livestream feature during Phase 3, optimizing core systems and SDK integrations to support 10k–30k concurrent viewers in a single livestream channel while ensuring smooth real-time interactions, including chat, gifting, Copy Trade, and Yell Point features.
Designed and optimized API caching mechanisms to reduce server load and improve cost efficiency.
Primarily responsible for high-complexity, high-impact tasks, including AR SDK evaluation, Ads Offerwall research, Unity version upgrades, and critical production issue resolution.
Implemented the Multi-Round PvP feature for streamers as a key Phase 4.
Researched and integrated livestream filter technologies, including beauty filters, AR effects, and VTube 2D solutions, to enhance the livestreaming experience during Phase 4.
Conducted internal knowledge-sharing workshops to help the development team understand critical technical topics and avoid common implementation problems.

Project Details:

My role: Unity Developer.
Project members: 4-6 Unity Developers, 3-6 BE Developers, 1-2 Game Designers, 1-2 BrSE, 1 Comtor, 3-5 Artists, 4-7 QC, 1-2 Web FE Developers, 1-2 Blockchain Developers.

Tech stack:

Platforms: Android, iOS, WebGL
Engine: Unity
Livestream system: Agora, Firebase Realtime Database, AR Foundation for Face Tracking (Built-In Unity package), MediaPipe, Live2D Cubism
Chat system: Sendbird
Ad Monetization: Tapjoy (Ad Offerwall) , LevelPlay
Digital Figure system: AR Foundation for Plane Detection (Built-In Unity Package)
WebSocket: BestHTTP
Backend & Infrastructure: Java, AWS

GOT TON (Unity C#)

GOT TON is a collection of casual mini-games developed as a Telegram Mini App, designed primarily as a user acquisition and marketing platform for the Bounty Hunters ecosystem. GOT TON includes four mini-games, a simplified PvE claw machine mode inspired by Bounty Hunters, and supporting features such as Leaderboards, Missions, Friend Invitations, Shop, Twitter account linking, and limited-time events.

The project was developed over approximately 10 months across two major phases.

In the initial phase, the client provided a puzzle game with numerous bugs. They wanted to fix bugs and add new features such as a Shop with items paid via Stars (Telegram currency) and the TON blockchain network, a Leaderboard, Missions, Friend Invitations... as well as an important requirement to connect to the Bounty Hunters ecosystem...The team completed development and deployment to the Telegram platform within a tight five-week deadline ahead of its showcase at the Game Show Tokyo 2024 (September 26–29, 2024).

During Phase 2, the project was expanded with a simplified PvE mode based on Bounty Hunters, three additional mini-games, major gameplay improvements to the original puzzle game, marketing event systems, and integrations with Google Analytics, Tapjoy Offerwall, and AdsGram. The project also included a standalone WebGL version deployed outside the Telegram ecosystem to support the Solana blockchain, which was not permitted within Telegram App Center.

Responsibilities include:

Sole Unity Developer.

Implemented major gameplay and platform features, including login, Shop with TON blockchain and Telegram Stars transactions, Twitter account linking, Leaderboards, Missions, and Friend Invitation systems on Telegram.
Integrated the game with the Bounty Hunters ecosystem.
Implemented Apps Network (cross-promotion advertising between applications within the Telegram Mini App ecosystem).
Integrated Tapjoy (Ads Offerwall), AdsGram (an advertising network designed specifically for Telegram).
Integrated the Solana blockchain network.
Integrated Google Analytics.
Reviewed and supported the implementation of the PvE claw machine mode.
Fixed critical bugs across the project.

Project Details:

My role: Unity Developer.
Project members: 1-2 Unity Developers, 1-3 BE Developers, 1 Game Designer, 1 BrSE, 1 Artist, 1-2 QC.

Tech stack:

Platforms: WebGL for Telegram Mini App platform, WebGL for Web Browser
Engine: Unity
Blockchain Network: TON, Solana
Marketing: Apps Network
Ad Monetization: Tapjoy (Ad Offerwall), AdsGram
WebSocket: BestHTTP
Backend & Infrastructure: Java, Node.js, AWS

VTO (Unity C#)

VTO is a Virtual Office (Metaverse) platform designed for small and medium-sized enterprises (SMEs) with up to approximately 100 employees. It enables employees to work, collaborate, and communicate in a shared 3D virtual office using customizable avatars. The platform is built to support Hybrid Work and Remote Work, improving communication efficiency, strengthening team engagement, and accelerating digital transformation.

The project includes the following features: multiple 3D workspaces, avatar + character customization, outfit personalization, Voice Chat, Chat Rooms, Direct Messages, Notifications, online meetings with screen sharing and presentation capabilities, multi-user support.

For more details about the project:

https://artmetaverseland.co.jp/

https://officehub.site/

In this project, Unity was primarily used to render the 3D virtual environment, 3D characters, and implement the real-time multiplayer client. The Unity application was built as WebGL and embedded into a React Native application.

The project consisted of approximately two phases. I joined about one month after Phase 2 had started, replacing the previous Unity Developer who had left the project. My responsibilities included continuing the development of unfinished features, fixing existing bugs, and implementing customer feedback and new feature requests.

Due to my responsibilities on both the Meta Horse and Bounty Hunters projects at the same time, I had very limited time to study the existing codebase. Despite this, I completed all assigned tasks and helped deliver the project on schedule. The project is currently still under development, with the client continuing to provide new tasks, feature requests, and feedback for future releases.

Responsibilities include:

Implemented the Teleport system, allowing users to quickly navigate between different rooms and floors within the virtual office.
Implemented to display all members of the organization.
Fixed bugs and implemented customer feedback and feature requests.
Optimized memory usage by reducing the memory footprint of user avatars, which previously consumed a significant amount of memory when displaying the organization user list.

Project Details:

My role: Unity Developer.
Project members: 1 Unity Developer, 2-3 BE Developers, 2 Web FE Developers, 1 BrSE, 1 Artist, 2-3 QC.

Tech stack:

Platforms: WebGL, Android, iOS
Engine: Unity
FE Web: React Native Web
Game Server: Colyseus
Backend & Infrastructure: Node.js (NestJS, TypeScript), AWS

B2B (Unity C#)

B2B is a prototype metaverse platform designed for marketing activities, including trade shows, product demonstrations, and client meetings.

Users can book meeting rooms and create virtual trade shows to showcase their products. Other users can visit these rooms, explore product demonstrations, and communicate with room owners or other participants through real-time chat. The platform also allows users to customize their avatars and purchase NFT accessories for avatar personalization.

The project had already been in development for approximately three months before I joined the team. I joined to deliver several critical customer requirements within a tight one-month deadline. The primary objectives included replacing all existing character models with a new character system and implementing physics-based character movement inspired by the gameplay mechanics of Game Beast game.

Responsibilities include:

Implemented a physics-based character controller inspired by Gang Beasts.
Replaced all existing character models with a new character system.
Fixed bugs and improved stability on the WebGL platform.

Project Details:

My role: Unity Developer.
Project members: 1-2 Unity Developers, 1-2 BE Developers, 1 Web FE Developer, 1 Game Designer, 1 BrSE, 1-2 Artists, 1-2 QC.

Tech stack:

Platforms: WebGL, Android, iOS
Engine: Unity
Game Server: PUN2
Voice chat: Voice - PUN2
Backend & Infrastructure:Java, AWS

MCC (Unreal C++/Blueprint)

MCC is a metaverse project centered around a virtual entertainment city inspired by destinations such as Las Vegas and Macau.

Players can freely explore the city and experience a variety of entertainment services, including casinos, supercar driving, and purchasing premium accessories for their avatars through the marketplace system. The platform also allows users to advertise and promote their products through virtual billboards, banners, LED screens, and other digital displays placed throughout the city.

The project was developed using Unreal Engine with a combination of C++ and Blueprint. During Phase 1, the project was built with Unreal Engine 5.1 and targeted Windows platforms only. In Phase 2, the project was migrated to a custom Unreal Engine 4.27 HTML5 ES3 build to support deployment on HTML5 (WebGL 2).

For more details about the project:

https://market.metacasinocity.io/

Prior to this project, I had no professional experience with Unreal Engine. Due to an urgent requirement for an Unreal Developer to continue Phase 2 development, I was given the opportunity to learn Unreal Engine. After approximately one month of self-learning and hands-on practice, I joined the project and contributed to Phase 2 development for approximately six months until its completion.

Responsibilities include:

Implemented an advertising system that allows users to purchase banner placements on buildings throughout the virtual city.
Converted and adapted most Blueprints and UI Widgets from UE 5.1 to ensure compatibility with UE 4.27 HTML5 ES3.
Resolved platform-specific issues and optimized functionality across HTML5, Android, and Windows platforms.
Improved existing features, including the Teleport, Minimap, and player control system.

Project Details:

My role: Unreal Developer.
Project members: 4 Unreal Developers, 4 BE Developers, 3 Web FE Developers, 1 Game Designer, 1 BrSE, 3 Artists, 5 QC.

Tech stack:

Platforms: HTML5, PC, Android, iOS, VR
Engine: Unreal Engine 4.27 HTML5 ES3 (a custom engine based on UE 4.27 for HTML5 platform that supports ES3 shader (WebGL 2))
Websocket: Websocket Networking plugin
Voice chat: Odin
Serialization: VaRest plugin
Backend & Infrastructure: Java, AWS

Dice Or Dead (Unity C#)

Dice Or Dead is an NFT-based turn-based strategy game where players roll dice and compete for assets while progressing toward their destination. Rather than focusing solely on reaching the goal first, players are encouraged to build wealth by purchasing properties at different locations and expanding their businesses throughout the game.

For more details about the project:

https://six502.gitbook.io/wp.en/dice-or-dead

The project had already been in development for approximately 8 months before I joined the team. I joined the project to resolve several critical issues and deliver customer requirements that needed to be completed before the project could be approved for release.

Responsibilities include:

Implemented new gameplay features: boss skills, cards, the referral system,...
Worked closely with Game Designers and QC teams to improve overall game quality and user experience.
Took primary responsibility for the game's Addressables-based asset loading and resource management systems.
Performed code reviews and provided technical feedback to other developers.
Implemented and resolved critical customer requirements and production issues.

Project Details:

My role: Unity Developer.
Project members: 3 Unity Developers, 3 BE Developers, 1 Game Designer, 1-2 BrSE, 1-2 Artists, 4 QC.

Tech stack:

Platforms: WebGL
Engine: Unity
WebSocket: stomp-csharp-client
Blockchain: Nethereum
UI Animation: DOTween
Backend & Infrastructure: Java, AWS

Agent (Unity C#)

Agent is a shooting game with intelligent mechanics, loads of cool upgradeable and ability system for weapons, gears, agents,...Players will choose an agent, control and upgrade the power to destroy all enemies.

Responsibilities include:

Responsible for object-oriented design, object management systems, event systems, physics systems, and third-party plugin integration (ad networks, analytics, in-app purchases).
Managed project progress.
Worked closely with the Game Designer to break down Game Design Document into development tasks.
Programmed most gameplay objects, including enemies, agents, weapons, gear, bullets, effects,...
Programmed most UI systems and was responsible for UI animations.
Ragdolls for all characters, including agents and enemies.
Responsible for the weapon attachment system, supporting hundreds of weapon models.
Implemented most of the VFX used in the game.
Optimized FPS performance and build size.
Reviewed code written by another programmer.
Responsible for audio programming and improvements.
Completed additional gameplay and core system tasks as required.
Implemented a cheat system to support Game Designers with game balancing and Tester team with testing.
Implemented tools to help Game Designers easily import data into the project.
Implemented the game's tutorial.
Responsible for the technologies that will be used in the project.

Project Details:

My role: Game Programmer and Project Leader.
Project members: 1-2 Game Programmers, 1 Game Designer, 1 Level Designer, 3 Artists, 1 Game Tester, and 1 animator (responsible for character animations)

Tech stack:

Platforms: Android, iOS
Third-party plugins: AppsFlyer, Facebook SDK, Firebase plugins (Remote Config, Cloud Messaging, Crashlytics, Analytics), Ads plugins (using Admob mediation to manage ad networks: Admob, Unity Ads, FAN, ironSource), Unity IAP
UI Animation: DOTween

Helicopter 3D (Unity C#)

Helicopter 3D is a prototype casual action shooting game in which players use a variety of weapons to hold back enemy hordes while protecting hostages and helping them reach the safety of a helicopter. The game features simple gameplay mechanics, fast-paced levels, and a variety of exotic environments.

Responsibilities include:

Sole programmer.
Designed all levels in close collaboration with the Game Designer.

Implemented gameplay mechanics and core game systems.
Integrated ad networks and analytics services.
Implemented UI systems, sound effects, and visual effects (VFX).
Created animations for all characters in the game.
Optimized FPS performance and reduced build size.
Implemented a cheat system to support development, balancing, and testing.

Project Details:

My role: Game Programmer.
Project members: 1 Game Programmer, 1 Game Designer, 1 Artist, 1 Game Tester.

Tech stack:

Platforms: Android, iOS
Third-party plugins: Firebase plugins (Remote Config, Cloud Messaging, Crashlytics, Analytics), Ads plugins (AdMob, Unity Ads, FAN, ironSource), Unity IAP

Zombie Racing Car 2D (Unity C#)

Zombie Racing Car 2D is a casual action game in which players must destroy enemies and carefully manage their remaining fuel to reach the finish line.

Responsibilities include:

Sole programmer.

Implemented gameplay mechanics and core game systems.
Integrated ad networks and analytics services.
Implemented UIs, animations, sound effects, and VFX.
Served as the sole level designer, creating maps based on the Game Design Document.
Optimized game performance, reduced build size.
Implemented a cheat system to support development, balancing, and testing.

Project Details:

My role: Game Programmer.
Project members: 1 Game Programmer, 1 Game Designer, 2 Artists, 1 Game Tester.

Tech stack:

Platforms: Android, iOS.
Third-party plugins: Firebase plugins (Remote Config, Cloud Messaging, Crashlytics, Analytics), Ads plugins (Admob, Unity Ads, FAN, ironSource), Unity IAP.

Drive Hill 2D (Unity C#)

Drive Hill 2D is a casual driving game in which players control and upgrade their vehicles to overcome challenging hills and complete all levels.

Responsibilities include:

Sole programmer.

Implemented gameplay mechanics and core game systems.
Integrated ad networks and analytics services.
Implemented UI systems, animations, sound effects, VFX.
Designed level maps based on the Game Design Document
Optimized game performance, build size.

Project Details:

My role: Game Programmer.
Project members: 1 Game Programmer, 1 Game Designer, 1-2 Artist, 1 Game Tester.

Tech stack:

Platforms: Android, iOS.
Third-party plugins: Firebase plugins (Remote Config, Cloud Messaging, Crashlytics, Analytics), Ads plugins (Admob, Unity Ads, FAN, ironSource), Unity IAP.

Kid Games (Unity C#)

Kid Games is a collection of children's games that I worked on as the Lead Game Programmer. The projects mainly consisted of hyper-casual and puzzle games. Each game was typically developed by a team of one Game Programmer and one Artist, with development cycles ranging from 2 weeks to 1.5 months.

Responsibilities include:

Managed the overall development progress of multiple projects.
Evaluated and decided on the technical solutions used for each project.
Integrated ad networks and analytics services and provided reusable source code packages for other projects.
Optimization performance and build size.

Weapon Party (Unity, C#)

Weapon Party is a battle royale RPG in which players are matched with others through a matchmaking system. Players can choose different character classes and weapon types before entering one of three game modes: 1v1, 1v9, or 5v5. I joined this project as a remote part-time Unity Developer.

Responsibilities include:

Worked closely with the Game Designer to design and implement player input systems, including a virtual joystick for movement, directional skill controls, swipe gestures for jumping and dodge rolling, and a virtual gamepad for skill buttons.
Implemented loot item systems and gameplay mechanics.
Developed weapon pickup and switching mechanics for various weapon types.
Collaborated with VFX artists to integrate visual effects for character skills.

Tech stack:

Platforms: Android, iOS.
Game Server: Fusion.
Backend: PlayFab.
UI Animation: DOTween.

Dungeon Hunter 5 (C++, Flash for UI)

Dungeon Hunter 5 is an action RPG game. I joined the project while working at Gameloft Da Nang Studio. Our team's primary responsibility was to port the game to Android, Windows 8, Windows 10, and UWP platforms.

Responsibilities include:

Owned and maintained the entire tracking and analytics system across Android and Windows platforms.
Worked closely with Producers and QA teams to resolve localization and UI issues.
Contributed to implementing new control system features for the Windows platform.
Assisted the Customer Care team by investigating issues and providing player-related information when needed.

Tech stack:

UI: Flash (ActionScript).
Engine: Proprietary game engines.

FASTBuild

War Planet Online is an MMO game. I was not a member of this project, but when I joined the R&D team at Gameloft DAD, I was assigned a challenging task: integrating the FASTBuild tool into War Planet Online project to reduce building time on Windows platform. And then building common mechanics to use on other projects.

In addition to the gameplay code, War Planet Online used many C++ libraries, so the build process took a long time and depended heavily on the build machine configuration. I successfully used a combination of FASTBuild and Premake to build common mechanisms that solved the build time problem on Windows platforms for other projects.

On Win32, FASTBuild successfully handled compiling and linking. The remaining problem was how to generate BFF files from the game source. I resolved this problem by implementing custom Premake to generate BFF files. As a result, build times were reduced by 15%–45%.
On UWP, the major issue was that FASTBuild did not support compiling XAML files. I resolved this problem by using a combination of FASTBuild and MSBuild. FASTBuild was used to compile C++ libraries, while MSBuild was used to compile XAML files via the command line. Finally, FASTBuild successfully linked everything together to generate the final executable for the game project. As a result, build times were reduced by 10%–30%.

Tech stack:

Build tool: FASTBuild, MSBuild.
Generate project files: Premake (Lua script).
Engine: Proprietary game engines.

AI Contest 2019 Programmer

AI Contest 2019 Programmer is a contest for programmers, in which participants write code to control their AI characters. They then upload the completed code to the AI Contest website, where the code is compiled and the built AI is matched with other players in a room. The game server handles the AI actions based on the code submitted by each programmer. Each player's AI is spawned on a map and must attack other players' AI while finding ways to survive. AI can increase its power by picking up items on the map or looting items dropped by defeated AI. The player whose AI achieves the highest score becomes the winner.

AI Contest is an annual contest with the goal of finding talented programmers for recruitment purposes.

Most members joined the AI Contest 2019 Programmer project as a side task, and development work for this project was carried out during free time or on weekends.

Responsibilities include:

One of two programmers responsible for implementing the game server logic.
Wrote a demo boss using Java.

Tech stack:

C++ was used for the game server. The game server sent AI clients information about the map, including the positions of other AI, items, bullets, and grenades thrown by other AI. The game server then handled the game logic based on the next actions of each AI.
Django (Python) was used as the server-side framework for the AI Contest website. Its responsibilities included handling user login, compiling player code, matching players' AI into rooms, processing recorded data from the game server, and then passing the processed data to the executable file built with the Defold engine.
Defold Engine (Lua) was used as the game view to display match results on the AI Contest website. The Defold engine built the game executable as an HTML5 bundle, and this executable used data processed by the Django framework to render gameplay.
Players used either C++ or Java to program their AI.

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