A dungeon colony sim where you play the dungeon itself: its Boss, its minions and the beasts in its caves. Dig out halls, wire deadly traps, and raid the world above for treasure. Then hold your hoard against the heroes who come to take it back. Play alone or in 2–4 player co-op.

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Free Demo

Play Malignus Demo

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About This Demo

This is the free demo of Malignus. It is also our beta test, so it holds everything in the current game.

You are the dungeon.

Inspired by Dungeon Keeper and RimWorld.

Your Boss rules from the throne. Your minions dig the halls, haul the loot and guard the prisoners, and they have opinions about all of it. Your caves fill with creatures to tame or eat. Raid the settlements above for treasure, then hold it against the adventurers who come to take it back.

Rule together. Build one shared dungeon in 2–4 player co-op.

  • Carve out your dungeon. Dig through solid rock, shape rooms, and fill them with workshops, beds, thrones, altars and traps.

  • Command six monster races. Goblins, kobolds, orcs, gnolls, bugbears and ogres each bring their own strengths.

  • Manage a dungeon full of personalities. Dozens of traits, grumbles and breakdowns mean your minions won't always behave.

  • Turn your halls into a deathtrap. Dart throwers, spinning blades, flamethrowers, gas, electric coils and webs. Wire them to pressure plates, tripwires, sensors, levers and timers.

  • Hold what you stole. Invasions grow larger and deadlier, with 6 adventurer races, 10 classes and more than 40 traits.

  • Keep plenty of prisoners. Chain up the survivors and interrogate them for secrets. Your minions expect a proper dungeon to have captives.

  • Raid the world above. Send your minions across the overworld, command every raid in real time, and face a world that remembers what you did.

  • Choose your Boss. Rule with one of four Boss monsters whose powers grow with your hoard.

  • Practice the dark arts. Cast Pyromancy, Electromancy, Necromancy and Shadowmancy spells, perform rituals, and bargain with dark gods for boons.

  • Tame what lurks below. More than 30 wild creatures live in the caves. Build one of nine lair types, tame them as pets, or hunt them for food.

  • Keep the dungeon running. Feed your minions, give them beds, craft their gear, and keep order through disasters and tempers.

Make it your own. Steam Workshop support comes during Early Access.

Join us on Discord. Chat about the game, report bugs and talk with the developer.

Mature Content Description

The developers describe the content like this:

This Demo may contain content not appropriate for all ages, or may not be appropriate for viewing at work: Frequent Violence or Gore, General Mature Content

System Requirements

    Minimum:
    • OS: Windows 10 64-bit
    • Processor: Intel Core i7-4770 / AMD Ryzen 3 3100 (4 cores, 8 threads)
    • Memory: 8 GB RAM
    • Graphics: NVIDIA GeForce GTX 1050 Ti / AMD Radeon RX 560, 4 GB VRAM, Vulkan
    • Network: Broadband Internet connection
    • Storage: 3 GB available space
    • Additional Notes: Malignus is in active development, and these requirements can change. Target: 30 fps at 1920x1080 at normal game speed. Integrated graphics need an AMD Radeon 780M or better and 16 GB of RAM. Intel Iris Xe is below the minimum. Single-player needs no Internet connection. Online co-op needs one.
    Recommended:
    • OS: Windows 10 or 11 64-bit
    • Processor: Intel Core i5-12400 / AMD Ryzen 5 5600 (6 cores)
    • Memory: 16 GB RAM
    • Graphics: NVIDIA GeForce GTX 1660 Super / AMD Radeon RX 6600, 6 GB VRAM
    • Network: Broadband Internet connection
    • Storage: 3 GB available space
    • Additional Notes: Target: 60 fps at 1920x1080 in a busy colony, also at 3x speed. The largest colonies and battles depend most on single-core CPU speed.
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