hard and not all well synced
1. well synced (just a few weird half-beats), too few lives
2. weird, not too playable. when silver level hits, the gears start growing -- even weirder.
3. absolutely bad. poorly synced, fading effect makes things really bad.
4. playable, but the diagonal layout for the 2 disks is odd.
5. dunno -- too hard to unlock
6. ....
To sum this up. The games were not playable enough to give me incentive to try harder and unlock the others.