This game is intended to be as relaxing as possible. The two colors and round shapes makes it easy on the eye. This combined with the soothing music makes it fit for relaxing.
This game was mostly an experiment, really. I originally intended it to be black/white due to me being really, really bad at making graphics, but it seemed more interesting to randomize the colorization process.
Also, the random-key-thing is something I've fiddled with for some time now.
I originally intended for Drugged Driver to be a regular racer but with randomized keys, but it proved to difficult to play, so I changed it to something else, however this game seemed suitably easy.