Studio with an indie heart
Celsius-Online has been crafting video games since 2004. Part of Plug In Digital since 2023, we carry the same passion, player-first mindset and demanding craft that shaped our indie roots.
Our projects
From browser MMOs to mobile hits, we create immersive worlds played by millions around the globe.
Cross-platform Web & Mobile MMO
Translated into 26 languages, Renaissance Kingdoms is Europe's leading cross-platform Web & Mobile MMO role-playing and management game. In this persistent simulation of 15th-century Europe, you play a character taking part in the economic, political and social life of your village, county and kingdom.
21+ years live, LiveOps activity as intense as ever
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Cross-platform Facebook & mobile game
Mutants: Genetic Gladiators is a cross-platform Facebook and mobile game. Become the ultimate psy captain, compete against players worldwide, climb the ladder and win magnificent prizes. Team up with friends to build a strong roster of allies.
12+ years live, 25M+ downloads
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Official mobile adaptation of the cult social deduction board game, allowing 16 players to investigate, debate & manipulate each other in hidden-role matches.
Cross-platform collectible card game
Mutants: Genesis is a cross-platform collectible card game where MMO depth meets CCG strategy. Play through a multi-choice narrative campaign, collect 300+ mutants, and compete in solo PvE, three-player co-op dungeons and raids, or 3v3 PvP and guild battles.
Cross-platform game for PC and mobile
Apple Arcade exclusive
An Apple Arcade cooking competition where you pick ingredients, prep and cook dishes in fast-paced mini-games, plate with style and serve them to judges while competing against players worldwide. Unlock 120+ recipes, customize your chef and upgrade your kitchen gear.
1.3M+ downloads, 6 months "App Top 10" after release
Cross-platform real-time party game
Cross-platform real-time party game blending social deduction, investigation, and hidden-identity gameplay for 8 to 10 players.
Cross-platform real-time game for PC and mobile platforms
The studio
Development of Master Chef: Let's Cook for Apple Arcade
Development of an HTML5 version of Mutants: Genetic Gladiators to replace the Flash version
Celsius-Online acquires Loups-Garous En Ligne
Celsius-Online acquires Kobojo and Ouat Entertainment
Launch of Tropical Wars and Celsius Heroes
Best Web and Social Game Ping Award for March of History
Launch of March of History
Patent registration for JavaScript technologies
Creation of the studio and launch of Renaissance Kingdoms