Hijinx

The Ancient Dealers: a creed whose very name carries such power that it physically forced you to roll your eyes when you read it just now.

When she falls foul of these unknowable tyrants, Jinx must free herself and her people from their curse the only way she knows how: running and jumping her way through dungeon after dungeon of spikes, sewage water, and self-levitating money.

Also, gravity is occasionally changing its mind about which way it points.

And there's a turtle talking to her.

Hijinx was made for the third Godot Wild Jam.
You can download the source code here, and you can play the enhanced edition here.