GameDuell

GameDuell is a Berlin-founded developer and publisher of casual, cross-platform multiplayer games. Established in 2003, the company builds digital card and board games, skill-based social games, and mobile free-to-play titles for players in Germany, wider Europe, and North America.

Its catalogue spans traditional and modern casual formats, including Skat, Rommé, Gin Rummy, Spades, Belote, Hearts, Solitaire, arcade-style games, and puzzle titles. Notable releases include Grand Gin Rummy, Belote.com, Spades Relax: Classic Card Game, Rummy Relax: Classic Card Game, Bubble Speed, and Fluffy Birds.

Multiplayer and live game operations

GameDuell develops and operates games with tournament, matchmaking, community-management, and LiveOps capabilities. Its work includes fair-play and fraud-prevention systems for competitive skill-game environments, alongside ongoing publishing and player-support operations. The company has built games for mobile, web-browser, and social platforms, supporting multiplayer play across iOS, Android, Facebook, and its own gaming portals.

Technology and game development

The studio’s development work encompasses game design, software engineering, cross-platform production, mobile publishing, and tournament operations. Its technology stack has included proprietary cross-platform frameworks and tools built with Haxe, HTML5, and Unity to support synchronous real-time multiplayer experiences.

GameDuell began with browser-based skill duels and classic card games before expanding into mobile and web gaming. It was acquired by Mobile Premier League in February 2022 and continues to operate as an active subsidiary within the group. Its game portfolio includes both international card-game releases and German traditional-game offerings, including Skat produced in partnership with the German Skat Association.