Holdout! is a chaotic co-op tower defense roguelite. With friends or solo, mine ore, smelt bullets, assemble ammo and haul it to your towers while bugs swarm toward the core. Between waves, buy new buildings and pick challenge cards.

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This game is not yet available on Steam

Planned Release Date: November 2026

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About This Demo

Up to four robots land on a bug-infested planet and have to hold the core. The robots have no weapons. Only the towers shoot, and you make their ammo yourselves, right in the middle of the attack.

Between waves, buy new buildings and upgrades, then put them up under fire. Every run your defense comes together differently, depending on your doctrine, what the shop offers and the challenges you take on along the way.

Survive every wave to leave the planet, or stay longer for extra experience.

  • Chaotic co-op for 1–4 players: one mines ore, another works the furnace, a third runs ammo to the towers, and there are still never enough hands.

  • Make your own ammo, from raw ore to finished rounds and shells.

  • Robots can’t fight. Bugs knock them off their feet, and whatever they were carrying ends up on the ground.

  • Buy buildings in the shop between waves and set up your defenses while the attack is on.

  • Upgrade towers along different branches: a turret with a huge ammo reserve, a rapid-fire tower with a machine gun on its roof, a cluster or napalm mortar.

  • Upgrade your stations too: the furnace stops burning the ore, the assembly table starts making ammo on its own, and the drill mines for you.

  • Conveyors and fully automated production lines (not in the demo).

  • Pick a doctrine before you drop: it sets the style of the run, like fast turrets fed with cartridges or cannons and mortars that hit whole areas.

  • Along the way, choose one of two challenge cards: new bugs, extra production steps or different rules.

  • Different locations, from swamps to snowy mountain passes, where night falls and the weather turns mid-run.

  • Between runs you live on a spaceship, unlocking new buildings, doctrines and difficulty tiers.

  • Play online or on one PC, and the number of bugs scales with the size of your team.

System Requirements

    Minimum:
    • OS: Windows 10 (64-bit)
    • Processor: Quad-core x86-64 CPU with SSE4.2 — Intel Core i5-6500 / AMD Ryzen 3 1200
    • Memory: 4096 MB MB RAM
    • Graphics: Direct3D 12 (feature level 12_0) or Vulkan 1.0 GPU with 2 GB VRAM — NVIDIA GeForce GTX 950 / AMD Radeon RX 460 / Intel Iris Xe Graphics
    • DirectX: Version 12
    • Storage: 1024 MB available space
    • Sound Card: Any
    • Additional Notes: An Internet connection is needed only for online co-op. In online games the host's PC simulates the whole world, so a faster CPU matters most for the host.
    Recommended:
    • OS: Windows 10 / 11 (64-bit)
    • Processor: 6-core x86-64 CPU — AMD Ryzen 5 2600 / Intel Core i5-8400
    • Memory: 8192 MB RAM
    • Graphics: Dedicated GPU with 4 GB VRAM — NVIDIA GeForce GTX 1060 6 GB / AMD Radeon RX 580
    • DirectX: Version 12
    • Storage: 1024 MB available space
    • Sound Card: Any
    • Additional Notes: An Internet connection is needed only for online co-op. In online games the host's PC simulates the whole world, so a faster CPU matters most for the host.