Glass

Glass is the first obstacle of the game. It can broken by balls. Glass may hook on to a metal (e.g. belts and cylinders) may move. It is usually seen in every checkpoint in random appearances.

In Checkpoint 7, Glass Cannons throw cubes of glass to the player.

In Zen Mode,they will mostly appear as a pane in normal exhibitions, and cubes in Zero Gravity (and stage 2) exhibitions.