13F

13F is a hand-painted pixel-art 2D platform game about an exhausted office worker trying to get home after working late. With the elevator broken, you must use the stairs to descend through an office building that seems strange, then get some rest before work the next morning.

Spot the abnormalities

The building contains 35 carefully designed, interconnected abnormalities, as well as other secrets. If you find no abnormality, continue downstairs; if you spot one, go upstairs to reach the next floor. Finding the right way forward is not always straightforward.