Thrixel

Build World takes a one-line game idea to something you can actually play. It settles what you are making, generates the 3D assets with Thrixel, then writes the game around them: scene, controls, UI, mobile input, and a build it plays through and checks before handing back. Three.js, Unity, Unreal and Roblox are supported. The first run sets up a Thrixel account and the connector that generates the assets; models come back as .glb you own and can keep using anywhere.