The Heavy Duty Super-Colliding Super Button (HDSCSB or just button.) is a testing element from Portal. It is activated when a player, Weighted Storage Cube, or enemy is standing on it.
- In 1.6 and below, the button does not light up like in the portal games, which is really strange since there is 2 seperate graphics for on and off This has been fixed in Mari0: SE.
- In Portal, you can't shoot a portal on a button, but in Mari0, you can.