Ryusei M.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Need a 2D game that runs smoothly on web, mobile, and desktop - without rebuilding for each platform? I specialize in creating engaging, high-performance 2D games using Phaser.js and Unity - from casual mobile games to complex browser-based experiences. With 5+ years of experience in game development, I've delivered 20+ shipped games for clients across gaming studios, startups, and enterprise brands. With deep expertise in 2D game development, physics, and performance optimization, I go beyond basic implementations. I focus on fun, polished gameplay and smooth 60 FPS performance - ensuring your game delivers an exceptional player experience. -------- What I Deliver -------- 🔹 Build 2D games from concept to launch using Unity and Phaser.js 🔹 Design game mechanics, physics systems, and interactive gameplay 🔹 Develop for web (Phaser.js), mobile (iOS/Android), and desktop (Windows/Mac/Linux) 🔹 Implement multiplayer features, leaderboards, and social sharing 🔹 Optimize performance for 60 FPS on all platforms 🔹 Create responsive UI/UX for touch, mouse, keyboard, and gamepad 🔹 Design levels, puzzles, AI behavior, and progression systems -------- Core Expertise -------- ✅ Game Engines: Unity · Phaser.js · Pixi.js ✅ Languages: C# · TypeScript · JavaScript · HTML5 ✅ Platforms: WebGL · iOS · Android · Windows · macOS · Linux ✅ Multiplayer: Photon · WebSockets · Socket_io ✅ Art & Animation: Spine · Aseprite · Photoshop ✅ Tools: Git · Unity Cloud Build · CI/CD · Jira 🔄 System Architecture Strengths 🔹 Clean, maintainable game architecture with SOLID principles 🔹 Performance optimization: draw calls, memory management, asset compression 🔹 Cross-platform compatibility: one codebase, multiple platforms 🔹 Scalable multiplayer systems for real-time and turn-based gameplay -------- Featured Experience Highlights -------- ✔️ Built 20+ 2D games across web, mobile, and desktop platforms ✔️ Achieved 60 FPS performance on all target platforms through optimization ✔️ Published games on App Store, Google Play, and web with 4.8/5 average rating ✔️ Integrated real-time multiplayer for arcade games reaching 10,000+ monthly players ✔️ Designed casual mobile games with 100,000+ downloads and 4.7/5 rating -------- Availability -------- 🌍 Available 40+ hours/week for game development projects ⚡ Fast turnaround for prototypes, MVPs, and polish phases 💼 Full-cycle development: concept → prototype → production → publishing Let's build something fun—a game that players love and remember. Send me a message and let's discuss your game concept 🚀 -------- Keywords -------- 2D Game Developer | Unity Developer | Phaser.js Developer | Game Development | Mobile Game Developer | Web Game Developer | C# | TypeScript | HTML5 | WebGL | Game Design | Physics Systems | Multiplayer | Photon | Spine Animation | Indie Game | Casual Game | Platformer | Puzzle Game | Arcade Game | Combat Game | Live Game | Serviral Game | War Game