Malignus demo
Dig out a dungeon, give your minions somewhere to eat and sleep, then wire the corridors with traps. In Malignus, the treasure you steal above ground gives adventurers a reason to invade your home.
What is in the Malignus demo
Dig out a dungeon, give your minions somewhere to eat and sleep, then wire the corridors with traps. In Malignus, the treasure you steal above ground gives adventurers a reason to invade your home.
2–4
players in co-op
6
monster races
Current beta
demo content scope
You manage the dungeon's work and its defence: minions dig, haul loot and guard prisoners, while pressure plates, sensors and timers can trigger traps. Raids above ground are commanded in real time. You can build alone or share one dungeon in two-to-four-player co-op.
Mossbomb calls this free demo its beta test and says it contains everything in the current game. That means the current development build, not a promise that future features are already included. Steam Workshop support is planned during Early Access. Expect an unfinished build with possible bugs and balance changes.
Player reception and who this demo suits
Steam shows 77% positive from 53 demo reviews (Mostly Positive; 27 October 2026). This is an aggregate for the separate demo app, not a Crit Pick review score or a representative explanation of every player’s experience. Individual review reasons have not been verified for this profile.
Try the demo if
- You enjoy colony logistics as much as setting up a defence.
- You want to build one shared dungeon with friends.
Maybe skip it if
- You want a polished final release with settled balance.
- You want a gentle builder without raids, prisoners or combat.
Full-game release and sources
Early Access planned for 12 November 2026. Demo availability was checked on 27 October 2026; a listed download does not guarantee that a build will remain available indefinitely.
Malignus screenshots
Official screenshots supplied through Steam. © Mossbomb. Demo-store screenshots. Checked 27 October 2026.
Malignus demo FAQ
How much is in the Malignus demo?
Mossbomb says the free demo doubles as its beta test and contains everything in the current game. This describes the current development build, not all future features.
Does the demo support co-op?
The demo description lists solo play and two-to-four-player online co-op in one shared dungeon.
When is Malignus entering Early Access?
Steam currently lists 12 November 2026 for Early Access. The full release date is not confirmed here.
Is Steam Workshop support already included?
The developer lists Steam Workshop support as coming during Early Access, so it is not promised as a current demo feature.