Create catapults, tanks, helicopters- anything you can imagine- with Besiege’s intuitive & flexible building system and extensive 70+ block collection!

The game’s intricate physics system creates a satisfying building & simulation experience, whether you’re the harbinger of destruction or your machine is falling apart.

Conquer your way through a singleplayer campaign of 55 destructible levels. Spanning across four island nations, each with its own environment, the campaign will pit you against unique civilizations ripe for conquest.

Cruise through Besiege’s huge sandbox levels, terrorizing their inhabitants, honing your craft & testing your ingenious prototypes.

Spiderling Studios’ latest expansion to Besiege will release on June 22, 2026.

Enriching the original game's experience, Besiege: The Broken Beyond offers a new expansion to the popular physics-based building and destruction game. In The Broken Beyond, players battle through a new space-themed campaign, introducing new block types for bringing chaos to other worlds. Using new gravitational mechanics, this expansion challenges players to explore new builds capable of escaping a planet's atmosphere and navigating the dangers of space travel.

Test your creations in the expansion’s new sandbox, featuring a large moon-inspired world for players to explore or leave behind- launching into space to discover what curiosities are in orbit. Using The Broken Beyond’s new space-themed blocks, you can spread your destruction across the star system to alien worlds.

Expansion Features:

• Spaced Themed Campaign – Unleash physics destruction on alien worlds in an ethereal solar system, while your unstable contraptions tear themselves apart.

• 13 New Space Blocks -  Cobble together ramshackle spacecraft from a huge selection of new blocks, now propelled by rocket fuel.

• Gravitational Mechanics and Planetary Atmospheres – Simulated gravitational fields enable you to establish complex orbital paths around several celestial objects at once. Planets have distinctive atmospheres that simulate aerodynamic physics. 

• New Physics Mechanics – Collide with countless rocks in your ship, push or smash meteoroids, and send moons crashing out of orbit! 

• Intergalactic Multiplayer – Engage in intergalactic multiplayer combat with your friends! Build ships and create custom levels with the in-game editor for more fun. 

 

Unlock more than 200,000 community made machines via the Steam Workshop, all available to download & play in your own game!

Besiege Multiverse is a portal for you to connect with other players and unleash chaos in multiplayer. Go head-to-head in epic machine combat or compete against your friends to complete level objectives and win custom game modes. Work cooperatively to conquer levels, complete puzzles and lay waste to armies & fortresses.

Besiege’s powerful level editing tools will enable you to wage war with AI armies and build custom environments with your friends! Make changes to levels in real time and create unique multiplayer experiences with the editor’s logic system. Robot wars, motor racing, football; there’s no end to the creative possibilities!

Besiege has built in support which has enabled our community to produce hundreds of mods and thousands of custom levels & skin packs. Easy to find and simple to install with Besiege’s Steam Workshop integration & our in-game modloader.

With almost 10,000 members, you’ll be sure to find help building, modding, skinning and if you’re looking for a challenge you can take part in one of the building contests. The community Discord is also a great place to find other people to play multiplayer games with!

Besiege is available on PC (Steam).