Defy Gravity (henceforth known as DG) is an example of what a small indie game should be.
Based on two types of gravity spheres, one pushing you away and one pulling you towards it. Using these you have to traverse levels and bounce/throw yourself across pits. Overall the gameplay is simple, standard WASD and mouse, plus having support for a controller.
What are you expecting out of an indie game? The sound is above average, as the music is pretty nice. The graphics are typical, though not bad enough to be annoying. The one complaint i do have with this game is that your character looks as if he's using a Super Soaker rather than a gravity gun.
I got this when it was on sale for $.14 (yes, 14/100) and it was a nice, cheap pickup. It'll provide a good amount of fun.
The controls are a bit wonky and some of the levels require split-second reactions.
Overall Grade: C+
Not Bad, but it's a small game, good to play if you got a few minutes to kill.