This is just like VVVVVV, except when you press the "flip gravity" button, everything else flips gravity instead of you. I know there's probably ten or twenty games out there that use similar mechanics, but the only one that comes to mind at the moment is LIMBO. And even then it more commonly used electromagnets instead of gravity.

The player-character is inspired by this webcomic.

Controls:
Arrows - move.
X - Jump.
C - Flip gravity.

Loosely based on NS-Shaft.

A star is engulfing a stream of matter. Don't fall out of sight, and don't get swallowed.

Arrows to move.
You get more points the farther you are from the star.

An endless version of the game Parallel Holes.
Dodge those randomly deployed spikes for as long as possible!

Navigate the obstacle course using two mobile portals!
Use the arrow keys to move the portals.