Zain Ul Abideen I.

Top Rated Plus Unity and Unreal Engine game developer with 10+ years of experience, 165+ completed Upwork jobs, 112 client reviews and 200+ games launched on Google Play, the App Store, Steam and web game portals. I help studios, publishers and founders turn game ideas into polished, profitable releases. Whether you need a full game built from scratch, a prototype to pitch investors, or an expert to fix, optimize and finish an existing Unity project, I deliver clean code, playable builds every few days and clear communication from day one. Message me with your idea, reference game or existing project for a free consultation, and I'll reply with a clear plan, timeline and estimate. GAME DEVELOPMENT SERVICES - Full-cycle game development: game design document (GDD), prototype, production, testing and store launch - Unity 6 development with URP and HDRP, Shader Graph, Timeline, Cinemachine and DOTS/ECS for performance - Unreal Engine 5 development with Blueprints and C++, Lumen and Nanite for high-fidelity PC and console visuals - Mobile game development for Android and iOS, from hypercasual to mid-core and 3D simulation - WebGL and HTML5 game development, optimized for Poki, CrazyGames, Facebook Instant Games and playable ads - PC and Steam game development with controller support, achievements and Steamworks integration - AR/VR development for Meta Quest, plus AR Foundation (ARCore/ARKit) apps and VR training simulations - Game prototyping and MVPs in days, not weeks, so you can test your idea fast - Reskinning, porting, bug fixing, refactoring and performance optimization of existing projects MULTIPLAYER AND BACKEND - Real-time multiplayer with Photon Fusion, Photon PUN2, Mirror and Unity Netcode for GameObjects - Dedicated servers, matchmaking, lobbies, leaderboards and cloud saves - Firebase, PlayFab, Unity Gaming Services, AWS GameLift and custom Node.js backends - AI-powered NPCs and procedural content using LLM APIs (OpenAI GPT, Google Gemini) MONETIZATION, ANALYTICS AND PUBLISHING - Ad integration and mediation: Google AdMob, Unity LevelPlay (ironSource), AppLovin MAX, Unity Ads and Meta Audience Network - Rewarded video, interstitial, banner and app open ads tuned for retention and ARPDAU - In-app purchases (IAP): consumables, subscriptions, battle passes and server-side receipt validation - GDPR and UMP consent, COPPA compliance and Google Play / App Store policy fixes - Analytics and attribution: Firebase Analytics, GameAnalytics, AppsFlyer and Adjust - Google Play Console and App Store Connect setup, ASO-ready builds and post-launch updates PERFORMANCE OPTIMIZATION - Stable FPS on low-end Android devices and in the browser - Draw call batching, LODs, occlusion culling, texture and memory optimization - Profiling with the Unity Profiler and Memory Profiler, crash and ANR fixes from Play Console vitals GAME GENRES I SPECIALIZE IN - Simulation games: driving, tractor, farming, truck, bus, car parking and tycoon/idle games - 3D racing games with realistic vehicle physics, drifting and AI opponents - Action games: FPS, TPS, shooters and battle royale - Open-world games with missions, traffic systems and world streaming - Hypercasual and hybrid-casual games with satisfying core loops - Puzzle, Match-3, merge, strategy and board games - Educational and kids games built to COPPA standards - 2D platformers, endless runners and arcade games POPULAR PROJECTS CLIENTS HIRE ME FOR - Finish a half-built Unity game and publish it on Google Play or the App Store - Port a Unity mobile game to WebGL, PC/Steam or Meta Quest - Upgrade an old project to Unity 6 and URP and fix errors after the upgrade - Add or fix AdMob, LevelPlay, IAP, Firebase and UMP consent in an existing game - Reskin a template game with new art, levels and UI for a fast new release - Fix lag, crashes, ANRs and Google Play policy warnings - Build vehicle physics for car, truck, tractor and bike simulators - Create a playable prototype or vertical slice for publishers and investors TOOLS Unity, Unreal Engine 5, C#, C++, Blueprints, Visual Studio, Rider, Git, Plastic SCM, Blender, Photoshop, Substance Painter, Jira and Trello. WHY CLIENTS HIRE ME AGAIN - Top Rated Plus with $100K+ earned and long-term repeat clients - Real studio experience as a senior developer and team lead at mobile game companies and top Play Store publishers - Clean, modular, documented C# code that your team can maintain and extend - Playable builds every few days, clear milestones and on-time delivery - Full source code handover and post-launch support - Available full time and working hours that overlap with Europe, the Middle East and the US East Coast If you're looking for a senior Unity developer, Unreal Engine developer or game development partner you can rely on, send me a message and let's build your game.