You might not have played Vib Ribbon (PSX)

Vib Ribbon is a very unique rhythm game for the PSX released in the year 2000.

Gameplay: Rhythm-Game, Singleplayer
The games charm comes from its simple graphics and cute character/music. On first glance you might expect the gameplay to be quite simple as well and to some extend this is true. You only use 4 different buttons in this game, which is not much compared to other rhythm games.
While your character walks down a one dimensional pathway you encounter different obstacles and you have to press the correct buttons to make it through. One button lets you step over holes in the floor, one button makes the character roll over spikes, another button lets you jump over Boxes and the last button lets you slide through a looping. Thats not all though. When the difficulty increases you will encounter obstacles that are combinations of the 4 shapes. If you have to get past a Looping that is covered in spikes, you have to press the button for rolling over spikes and sliding through a looping at the same time. The game will also try to screw you over by sending non static obstacles towards you on the pathway (e.g. a box that will move past other boxes to get to you faster) or suddenly change the speed of the music to throw you off guard.
One mayor feature of this game is that you can play automaticaly generated courses of your favourite tracks by inserting a music CD into the PSX drive. But the original soundtrack of this game is so charming that you wont necessarily have to do it to have fun.
 

 You can still get this game at a moderate price on ebay.