Cygnus
If you think that a game with a bunch of colorful lines doesn't deserve to be called a "game" at all, then Cygnus just might change all that. Now, in a world where competing for realism is what sells most video games, Cygnus attempts to stand apart. This deceptively simple game will actually give you quite a good challenge.
In the game, you are left to maneuver a ship that has no means of offense. You are basically in pursuit of what I presume to be another ship that's colored in red. You cannot fight or shoot down anything since you don't have any weapons. The one thing that you can do, though is simply maneuver, rotate or thrust your way down the goal. Think you can breeze through this game? Give it a go.