Besiege Space Builder Edition

Besiege is a physics-based building game in which you construct medieval machines to destroy armies and castles and overcome obstacles. Build siege engines, battering rams, ballistas and other machines using a flexible building system with more than 70 blocks. Its physics system simulates how your creations work—and how they fall apart.

Campaign and sandbox

The single-player campaign has 55 destructible levels across four island nations, each with its own environment and civilization to conquer. In large sandbox levels, you can terrorize inhabitants, refine your designs and test prototypes.

Multiplayer

Besiege Multiverse connects players for competitive and cooperative play. You can fight other machines head-to-head, compete to complete level objectives and win custom game modes, or work together to conquer levels, solve puzzles and destroy armies and fortresses.

Create levels and machines

The level editor lets you build custom environments with friends and wage war against AI armies. You can change levels in real time and use the editor’s logic system to create multiplayer experiences, including robot wars, motor racing and football. Steam Workshop offers more than 200,000 community-made machines to download and play, along with access to community-made mods, custom levels and skin packs through its integration with the in-game modloader.