Dancing blocks

The purpose wasn't the difficulty but this strange behaviors of the game You can reproduce that with only one moving block and a vertical slider, whatever the height you place them. They will act like that, near the ground. But if you add any other kind of element (other than a "copper" one) this behavior will dissappear... Sounds like a funny and interesting little bug.

Wow @hadi! I almost forgot this level . One year later it's really nice to see this coming back to surface, as a lot of memories...