An AI game engine that runs in the browser.
Build your game, generate models, and shape the gameplay with AI. Rendering, physics, and multiplayer are built in, so you can keep making your game.
Everything behind your game
Explore the tools that turn your idea into a world you can play.
World graph
Explore the objects and rules that make up your world. Select anything to see and change how it works.
Visual scripting
Wire up behavior by hand or just describe it. It compiles to the same real code the engine runs.
Blueprint packages
Reusable kits like a day-night cycle, an inventory, or a boss fight, packaged once and dropped into any world.
Assets
Generate characters, props, and materials from a description, then use them in your game.
Server runtime
Gessa runs the shared game state on the server, keeping players in sync.
Persistent state
Your project's data is stored on the server and is still there the next time you open it.
Workflow factories
Set up recurring events, economies, and daily quests that keep running in your world.
Multiplayer
Friends in the same world in real time: sessions, sync, and presence, with no netcode to write.
WebGPU renderer
Real 3D in a browser tab. No install, no plugin.