Here's my entry to the fourth task of @Will_Wam's platformer contest! Use arrow keys to run and jump. Use WASD to switch the gravity. S is normal gravity, W is upwards gravity, A is leftwards, and D is rightwards. Note: When gravity is upside down, holding the right arrow will cause you to move left, which is to the right, except upside down.
Added my entry. Music is "Science is Fun" from Portal 2. This videogame was produced by Valve Corporation.
