As of this writing: The Void for the Windows PC is on sale for $2.49 (75% off) on Steam as the "Daily Deal." This innovative indie adventure takes place in a void, an odd space between life and death. In this game:
Color is the only resource in the game: it acts as the health, inventory, skills and perks system, armory.
All in-game actions are realized through drawing.
Each color can cause both harm and good.
Here's a trailer for the game: