QuadKings — Cross-platform chess game for 4 players

I founded the studio RoboForgeStudios and independently developed and launched a commercial cross-platform gaming project — a unique chess variation for 4 players with simultaneous moves and fog of war (Fog of Checkmate). The game has been successfully published on Steam and Google Play. What was done from idea to release: Designing and implementing a client-server architecture in Kotlin (Coroutines, Ktor Client/Server) with stable real-time multiplayer. A global matchmaking system, custom lobbies, a ranking system according to FIDE standards, and dynamic leaderboards. Designing relational databases for storing game sessions, rankings, and user profiles; optimizing SQL queries for high-load operations. Product mechanics: alliances, in-game cosmetic shop, integration of analytics systems and AI components. Fully adaptive UI/UX (from Figma to code) for a seamless experience on both PC (Steam) and mobile devices (Android). Self-publishing on Google Play and Steam. Result: A complete development cycle of a commercial product from scratch, including backend, real-time networking, game design, monetization, and release on two platforms. Key skills and categories (for the form): Kotlin, Android SDK, Jetpack Compose, Ktor (Client/Server), Coroutines, MVVM, Client-Server Architecture, Databases (SQL), Realtime Multiplayer, UI/UX (Figma), Google Play Console, Steamworks, Game Development, Network Programming.