A downloadable game for Windows

Guide the 1-Slot warrior through 12 levels of the treacherous Castle Demonstone!


  • WASD or Arrow Keys - Move
  • Space - Wait

Made for GMTK's "only one"-themed 2019 game jam.

Rated 4.7 out of 5 stars
(22 total ratings)
AuthorRad Codex
TagsShort, Top-Down, Turn-based


DemonstoneEXE_v101.zip 28 MB
Demonstone_v1 GAME JAM version 28 MB

Install instructions

To play, simply extract the .zip anywhere and run the .exe.

Development log


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i wish it was on mac or web

you can play for mac but you need to download one thing

Love the game and the music. Keep up the good work.

Great game! Wish it was longer!

Excellent design! Great ending song.
And I love the one-item-only idea.

This is just so excellent

Great mechanic and nice game! Perhaps you can better differentiate the bright red enemies (multiple hits sword, one hit axe) and the dark red enemies (one hit sword or axe). I also didn't know what the grey piramides do.

Thanks! I should have chosen a more obviously different color. The grey pyramids are poorly drawn weights and do nothing.

(2 edits)

Love this game so far. Is there any chance you'd be willing to send me the main menu music? I can't get enough of it.

(2 edits)

Sure! I got it here: https://opengameart.org/content/boss-battle-4-8-bit-re-upload

Nene uploaded a number of other good tracks like that to opengameart, you should check 'em out.

I'd play more of this. :) It definitely gave a Crypt of the Necrodancer feel, but without the rhythm part.


Not having an inventory is so freeing. This is video game therapy.

Amazing, I really had to put thought to finish this one. Thanks for another amazing work, this is from a fan of both Voidspire and Alvora Tactics!