The Stackonauts need your help. Build the sturdiest tower you can and get them to the safety of your transport ship. Time, unforgiving physics and your rivals' cannons stand against you across several modes for 1–4 players.

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About This Game

Challenge your friends to a chaotic space race to see who can rescue the most stranded astronauts. In Stackonauts you face off in a physics-simulated world full of unexpected pitfalls and hostile conditions.

Victory takes not only a builder's steady hand but also a gunner's sharp aim. Remember: what can be built can also be torn down. Who said saving lives can't be a tough business?

Pick one of five unique heroes: Scientist, Medic, Fighter, Hybrid or Cyborg, and jump into the action across several game modes:

Several PvP modes:

  • Planet Rescue

    A call for help rings out from the surface of a hostile planet. You and other glory-hungry rescuers from the nearby stations set off after the signal at once. But before you get close with your transport ship, build a tower on the surface for the Stackonauts to climb to a safe height. Use cannons to boost your chances of being the most successful of the group. Who said saving lives can’t be competitive?

  • Station Rescue

    Disaster has struck a space station, and dozens of Stackonauts are stranded on three floors of the observatory with limited oxygen. Despite the bad weather, build a tower on each of the three floors so they can climb up to the landing pad. Time is running out...

  • Pit Rescue

    Stackonauts are stuck in a tank flooded with acid. Use the structure above the surface to place as many blocks as you can; they will be a temporary refuge until your transport ship arrives. Place every block with care.

  • Orbit Rescue

    After the station broke apart, groups of Stackonauts were left scattered across open space. Grow the room for your crew, keep out of your rivals’ fire and pick up as many as you can.

  • Blackout Rescue

    While the Stackonauts wait scattered among the wreckage or hidden in makeshift bunkers, the whole sector has plunged into darkness. Search the area, pick up as many as you can and get back to the mothership with them in time.

Two co-op modes coming soon:

  • Babylon Tower

  • Bridge to the Unknown

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Generative AI tools were used during development to assist in the creation of some in-game assets, such as 2D graphics and textures.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 64-bit
    • Processor: Dual-core 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: Integrated GPU with DirectX 11 / WebGL 2 support (Intel HD 4000 or newer)
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 1024 MB available space
    • Sound Card: DirectX compatible
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 11 64-bit
    • Processor: Quad-core 3.0 GHz
    • Memory: 8 GB RAM
    • Graphics: Dedicated GPU with 2 GB VRAM
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 1024 MB available space
    • Sound Card: DirectX compatible