ASTRA Arcade
Six browser games in one arcade, including mountain rally, snowboarding and antigravity racing; counted as one collection.
Assemble a ship from modular parts in this building game, inspect its connected systems and fly ring stunts, jumps or an isometric shooting mode.

Details
The work description and facts above come from the upstream README. Any Astra Games guides are listed separately, with their own sources and verification notes.
Platform
Browser; keyboard and on-screen flight controls. Free, no account or imported assets required to use the starter ship.
GPT-6 Astra
X — The creator credits Astra and Three.js for the ship-building and flight-game project. Verification notes.
Six browser games in one arcade, including mountain rally, snowboarding and antigravity racing; counted as one collection.
An unofficial multiplayer Chao Garden fan game: choose a Sonic character, explore the garden and interact with Chao.
An interactive particle-art sandbox: morph 48,000 light points between a flower, a gravity ring, and a galaxy, disturb the sculpture, and export a moment as a poster.