Marblez

The goal of the game is to knock all the marbles off the platform. To do so, you play as a marble that gets flung forward, controlled with A and D to turn and S to dive, and eventually thrown off the platform. That is all. 

(Not really. Here is some more technical stuff.) 

Practice mode is pretty normal: you have infinite shots and can choose the formation of the marbles. Challenge mode is something you set up on your own. You choose the number of shots you get, the speed of the rotating platform, and which powerups are active. PVP mode requires a friend, (None of which I have, so I can't test PVP mode. Good luck not breaking the game). the goal is to get rid of your marbles before your friend does. As for powerups, the yellow one makes you go faster, the red one flings you, (And other marbles), into the air, and the green one makes your marble gigantic. That is truly all. Now go play the game.

Yes, this game was made many, many years ago, out of sheer boredom. In two days, nonetheless.