Apprends Gessa.
Ce qu'est Gessa, comment ça marche et des guides pour aller plus loin.
Pour commencer
Gessa est un espace gratuit pour créer des jeux et jouer avec ses amis et l’IA.
Décrivez un jeu, affinez-le avec l’IA, puis lancez-le. Le monde, les modèles et la logique sont accessibles et modifiables.
Guides
Des guides pratiques pour créer votre premier jeu et aller plus loin.
Start here
Make your first game with AI
Describe your idea, build its world and rules, then test and share it. Start with the AI creation guide or follow a first-game project step by step.
How to make a game with AI
Make a game with free built-in AI in Gessa. Describe the idea, generate models, textures and audio, test the rules, and publish a browser game for friends.
Make your first game: a complete beginner tutorial
A complete first-game tutorial in Gessa. Describe a small idea to the free built-in AI, build a world, add one collectible, a score and a win screen, then publish a browser link to play with friends.
Level 1
Create models, textures and audio
Give your game its own look and sound. Generate the assets you need and refine them in the world you are building.
Level 2
Play with friends
Build a game around something friends can do together. Use Gessa’s multiplayer engine, test the shared rules and publish a game link to share.
Level 3
Go deeper
Once you are comfortable building and sharing, understand what sits underneath: the engine around Three.js, what an AI game engine is, and how the field compares.
Three.js games with AI: creation, assets and multiplayer
Make Three.js games with AI: compare custom code and Gessa, understand WebGPU and WebGL2, generate assets, and publish games to play with friends.
What is an AI game engine?
Learn how AI game engines connect game creation, assets, multiplayer and play. Compare workflows and make games with free built-in AI in Gessa.
Best browser game engines in 2026
Compare the best browser game engines of 2026 for 2D, 3D, WebGPU, AI, multiplayer, no-code authoring, and web export, with a clear pick for every job.
Switching or stuck
Migrate and troubleshoot
Coming from another engine, or hitting a wall? Move your assets across from Unity, Roblox or Three.js, and fix the common problems by cause and fix.
Migrating to Gessa from Unity, Roblox or Three.js
Plan your move to Gessa from Unity, Unreal, Roblox or Three.js. Test reusable glTF or GLB assets, rebuild game behavior with AI and visual scripting, and publish a browser game.
Troubleshooting Gessa: common problems and fixes
Practical checks for making and playing games in Gessa: loading, published links, multiplayer behavior, AI edits, generated assets and performance.