House of Stairs
A downloadable thing for Windows, Mac OS X, and Linux
No walls, no ceiling, and no floor. They've built this prison just for you.
Made in a couple of hours for Ludum Dare 33 (theme: "You are the Monster").
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Walk around with WASD/Mouse.
In order to download this thing you must purchase it at or above the minimum price of $5.00 USD. You will get access to the following files: