: If you're stuck, you can download thousands of community-made bots and worlds to test or modify. Caution on Unofficial "Free" Downloads
: Use free-form tools to extrude and shape a robot’s chassis into any form, from spider-bots to planes.
: A Free Demo is available on Steam, allowing you to try the core building and programming mechanics before purchasing. Main Assembly Free Download
: Pirated versions typically lack multiplayer support and access to the Steam Workshop , which are core parts of the experience. Save 80% on Main Assembly on Steam
: Unofficial installers from untrusted sources frequently contain malware or adware. : If you're stuck, you can download thousands
: Creations react to aerodynamics and can be smashed into "metallic pulp" during collisions or Bot Brawls.
: The game frequently goes on sale. It is currently available for $19.99 $3.99 (80% off) on Steam until May 4, 2026. : Pirated versions typically lack multiplayer support and
is highly regarded for its deep engineering sandbox, offering features that keep players coming back: