Hire the Best RPG (OS/400) Specialists

I build responsive, polished gameplay systems in Unity—focused on mechanics, AI, and performance. If your game feels “almost there” but lacks smooth mechanics, smart AI, or optimization—I can help turn it into a complete, playable experience. I’m a mid-level Unity developer with 2+ years of experience, specializing in 2D and 3D gameplay systems using C#. I focus on building mechanics that feel good to play, not just systems that work. 🎮 What I can do for your project: Gameplay mechanics (movement, combat, abilities, physics-based systems) AI systems (state machines, behaviors, enemy logic) Full game systems (core loops, progression, interactions) Optimization (fix FPS drops, improve performance for mobile/PC) UI & animation integration (including Spine) Debugging and fixing broken Unity projects 🚀 Featured Projects 🕸️ Swingfall (Rogue-like 2D Platformer) A unique side-scrolling game built around a physics-based swinging mechanic. Developed custom swinging system using Unity physics Implemented enemy AI (state-based behavior) Integrated VFX, Spine animations, and gameplay systems Focused on responsive movement and performance 🎣 Angler’s Journey A complete game built from scratch, showing my ability to design, implement, and finish core gameplay systems independently. Designed and implemented full gameplay systems independently Built core mechanics without prior professional experience Demonstrates strong problem-solving and self-learning ability 🌌 Take Me To Elysium (Capstone Project) A fully developed game created without AI assistance—pure engineering and research. Built complete system architecture Integrated UI, animations, and VFX Focused on clean implementation using Unity documentation 💡 Why clients work with me: I focus on game feel, not just code I can take a system from idea → fully working feature I understand both technical implementation and player experience I communicate clearly and can work long-term 🤝 Let’s work together I’m open to indie projects, startups, and long-term collaborations. If you need a developer who can build solid gameplay systems and make your game actually feel good, send me a message. *Unity *C# *Game Development *Gameplay Programming *Artificial Intelligence (Game AI) *2D Game Development *3D Game Development *Mobile Game Development *Game Mechanics *Debugging *Performance Optimization *Spine Animation *UI Development (Unity) *Physics Systems *Animation Integration I don’t just write code—I make sure your game feels good to play.

I have been developing software for Linux for over twenty years, both professionally and personally, in a broad range of fields. My primary programming language is C, but I do a lot of work in Python and C#, and I use or have used many other languages in a variety of environments and operating systems. Game engine, tools and logic development is my main focus, but all aspects of programming interest me. I very much enjoy problem solving, and I am quite skilled at finding and fixing tenacious bugs. General areas of work include graphics programming, physics simulation, 2D and 3D math, high performance multi-threaded programming, debugging, compiler development, model import, export and processing tools. Languages: C, C#, Python, GLSL/HLSL, C++, Objective-C, Ruamoko (Objective-QuakeC (I wrote the compiler)), 80x86 assembly Tools: gcc, git, autoconf, automake, make, Blender, Unity, DJGPP, OpenGL, bash, sed Operating Systems: Linux, MS-DOS

Im a game developer working with unity3d since 2012. ive worked with videogames for pc, Vr using oculus and htc vive (including mobile like oculus quest or GearVr or cardboar), and interactive applications like ArchViz and product presentation. (Programming and final render involving lighting, postprocessing and asset integration) my secondary skill is lowpoly 3d modelling and texturing for videogames using pbr, and assets optimization.

10+ years of experience in C++, 8+ years of experience in game development. I also have a good knowledge of how to organize work process for team of 2-5 programmers, I been working in Lead Programmer position for last 2 years. I have a game engine of my own development, it used in game projects of Ironclads game series. Also I worked with Unreal Engine 4, Unity 5, but most experience I have in render APIs like DirectX 9, 11 and OpenGL plus shaders languages HLSL, GLSL and visual effects.

Hi there! I'm Daniel! Construct 3 Expert here! Since 2014, I've led Arcadesindo Games, a fully remote Indonesian game studio with an 8-person production team through 10M+ combined downloads across shipped titles and gamification projects for global brands including Pizza Hut Middle East, CD One Price Cleaners, and a leading Australian university. This profile is where I take on development work directly: builds, fixes, customization, and technical integration, bringing that same studio-level process to individual contracts. What We've Shipped: ✅ PC/Steam: Hotelnomaly (2024) & Rail of Sorrows (2025, WIP) — Unity titles on Steam ✅ IP Adaptations: Developed mobile games with 10+ YouTube animators across Indonesia and Malaysia since 2020, with flagship titles hitting 5M+ and 3M+ downloads ✅ EdTech Platform: Built 20+ original games for 22Media's Nininana.sk, adapted into a scalable template framework powering 100+ product variations ✅ Portal Integration: Large-scale API integration connecting B3's arcade portal to a live library of 70+ games ✅ Engine Mastery: 80+ Construct 2/3 projects across Web/HTML5, Android, iOS, and Desktop ✅ Interactive Marketing: Gamification campaigns and microsites for Global Brands like Pizza Hut, and VTB Bank. ✅ Backend & Monetization: Multiplayer systems (Photon Realtime, Colyseus), Firebase/PlayFab integration, and full ad-network/IAP setups (AdMob, AppLovin, Unity Ads, IronSource, Meta) ✅ Art & Animation: In-house 2D character art and Spine 2D skeletal animation, used across our original titles Recognition: 🏆 Intel Top Developer (Intel Innovation Day 2015) 🏆 6x Dicoding Game Competition Winner (Ooredoo/Indosat, Intel Indonesia, Samsung Indonesia, DBS Bank Indonesia — 2015-2018) Why Clients Keep Me Long-Term: ✅ 100% Job Success Score | Upwork Top Rated | $70K+ earned, 39 contracts ✅ 100% Fast response time ✅ I integrate directly with your existing dev/backend/creative team ✅ Focused on ongoing partnerships, not just one-off deliveries Who I Work Best With: Whether you need a full game built from concept to public release, a broken or abandoned build fixed and finished, an existing game ported across platforms, or gamification built for a marketing campaign or IP, I bring the same studio-level process to each engagement. 📩 Send me your project scope, target platform, and timeline. Let's figure out how to get it shipped. Best regards, Daniel William Founder & CEO, Arcadesindo Games

I started my C# career writing diagnostic software for nuclear power plants. Reliability there wasn't a feature. It was the baseline. That habit never left me, and these days it goes into my Unity work: small, focused tasks, full games, and everything in between. 7 years of C#. PC, mobile, VR. I can jump into an existing project, own a standalone system, or take your idea or GDD all the way to a working MVP: planning, architecture, gameplay, UI, integrations, optimization, testing, and builds you can actually play. 🔹 SOME THINGS I'VE BUILT • Godly Survivors, an action roguelite released on Steam. I designed and developed it solo, including custom progression, enemy AI with dynamic difficulty, and runtime world generation. I owned its design and development from first concept to launch. • Expanded a 12-level 3D educational game for kids with new arcade mechanics, story progression, and supporting systems. • Developed VR/XR apps for Meta Quest and Apple Vision Pro with live 360° video, streamed content, and backend integration. • Built mobile games and simulators featuring boat physics with water dynamics, time-stop puzzle mechanics, REST APIs, Firebase, and monetization. • On one optimization job, I cut an app's build size by 5x. I genuinely enjoy profiling and hunting down CPU/GPU bottlenecks. 🔹 WHAT I CAN DO FOR YOU • Build your game from start to finish: indie titles, MVPs, and vertical slices. • Design and code gameplay systems: combat that feels right, enemy AI, abilities, inventory, economy, progression, and save systems. I lean on data-driven configs so designers can tune things without touching code. • Help on the design side too: core loops, balance models, docs a team can implement without guessing, and custom Unity Editor tools when a workflow needs one. • Take over or extend an existing project: new features, bug fixes, refactoring, third-party integrations, and gameplay or UI polish. • Profile and optimize for PC, mobile, and VR. • Handle backend and platform integrations: Firebase, REST APIs, Addressables, IAP, ads, and the SDKs your project needs. 🔹 HOW I WORK Clear milestones, risks raised early, and playable builds throughout instead of one big reveal at the end. AI speeds up implementation and testing; I do the thinking, shape the architecture, and make the final call. You get honest progress updates, documented changes, and code the next developer won't curse at. I care about the product, not just the paycheck. Details matter to me. Whether it's a focused fix, an indie MVP, or something bigger (AAA too, assuming you bring the studio 🙂), send me your idea, GDD, current build, or task description, and I'll help turn it into a working result.