30 Days Underground

Story

Your dream was to be an adventurer. You were out questing one day when the earth gave way, dropping you into a deep, shifting subterranean maze.

The exit is nowhere to be found, and your food supply is rapidly dwindling. To see the sun again, you must dig deeper into the dungeon's heart, manage your precious resources, and survive for 30 grueling days against mutant slimes, mummies, and the dreaded Elite Zombies.

Gather your strength, choose your hero, and find the Exit Gate. Victory awaits those brave enough to dig deeper.

Urban Level
Sand Level

Gameplay & Controls

30 Days Underground is a challenging but accessible survival roguelike. There's no timer to rush you, so take things at your own pace!

  • Movement: Use [W,A,S,D] or [Arrow Keys] to move. Every step drains your Food meter. If it reaches zero, you die!
  • Attacking & Mining: Just move directly into an enemy to attack them, or into a wall to break it!
  • Skip Turn: Press [Space] to stay in place and let enemies move.
  • Select Your Hero: Choose between Bob, Steve, or Caso—each with unique stats to help you brave the depths.

Survive the Biomes

We buck the trends of traditional endless games by giving you a clear, finite goal: Survive 30 Days.

As you progress, the environment will shift and become more dangerous. You will start in the ruined Urban underground, push through the scorching Sand caves, and finally brave the frozen Snow depths.

New enemies like the Fly-GH28 and Mutant Slimes will test your tactical positioning on the later floors!

Snow Level

Cross-Platform Cloud Saving

Your save data is secured using your unique Permanent Recovery ID (Transfer Code). This code acts as your official Username and can be used to load your exact save on any browser or computer in the world.

To transfer your data between the Web version and the Desktop App, simply copy your code from the Statistic Menu and click "Login with Code" on your new device!

30D-XXXX-XXXX

Download the Game

Want better performance, full-screen graphics, and offline support? Download the official Windows Desktop Application below!

Download 30DaysUnderground_Win.zip
145 MB