https://store.steampowered.com/app/1511620/Dark_spot/
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STEAM KEY REGION FREE GLOBAL

Dark spot puzzle game with hand drawn graphics.
Use the mouse to move the dark spot and try not to drop it.
The goal of the game is to collect all the stars on the screen and go to the exit.
At the moment there are 14 levels available with pleasant music.
The difficulty increases with each level.