You control a small slime named Andreas who is trying to collect gems in the underground. Dig through blocks to make your way through all 32 levels!

Original Ludum Dare 48 version is playable here:

You can destroy dirt and sand blocks, and push boxes, by selecting them with your mouse. Dirt is not affected by gravity, but sand is. Collect all the small gems in the level first, and then collect the large gem.


  • mouse click or touchscreen tap to move the slime
  • Z: undo last move
  • R: reset level
  • M: toggle music
  • ESC: return to map screen

Tools used:

  • Made with plain Javascript and HTML canvas.
  • I used vim to write all the code and based the initial engine code off the engine of a previous LD game.
  • Graphics done with Aseprite, with the SimpleJPC-16 palette.
  • Music made with PXTone.
  • Sound effects made with the Magical 8 Bit VST, PXTone, and Audacity.
  • Levels created with Tiled and compiled into a simpler format using the ulvl Python library.

Check out my other games at!

Updated 27 days ago
Rated 5.0 out of 5 stars
(1 total ratings)
Tags2D, Abstract, Colorful, Cute, Pixel Art, Puzzle-Platformer, Relaxing, Tilemap
Average sessionA few minutes
InputsMouse, Touchscreen
AccessibilityColor-blind friendly, High-contrast, Textless


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(3 edits)

I also like this underground puzzle game, too! At the top middle, I found this level with a star that's at 400m. Is it like a bonus level or something?

Yes, it’s a bonus level that’s based off the level it’s connected to!

Oh... I get it. Is that level like maybe, worth extra points or treasure?

Nah, it’s just for fun, haha.

Well, I still enjoyed that underground block-digging puzzle game, through.


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Oh wow, thanks! This is very cool!