VVVVVV is a retro styled 2D platformer by Terry Cavanagh, creator of dozens of free games. You play as the fearless leader of a team of dimension exploring scientists who inadvertently crash, and are separated. The game involves exploring the strange world you've found yourself in, and reuniting your friends.
VVVVVV explores one simple game mechanic: you cannot jump - instead, you reverse your own gravity at the press of a button. The game focuses on playing with this mechanic in a variety of interesting ways.
The game is designed not to artificially gate your progress. In VVVVVV there are no locks, no power-ups, no switches, nothing to stop you progressing except the challenges themselves.
Enjoy VVVVVV and many other great games on Desura.
Only 5 bucks? I wanted to try this game.
Or you can buy it and Crayon Physics as part of the Humble Indie Bundle, name your own price, and give to charity, all at the same time!
I remember paying 15 dollars for this game, don't regret it one bit ;D