It’s a puzzle game except you explode if you don’t solve it fast enough. The multiplayer is one of a kind and plays well with one, two, three or four people, human or otherwise.
What Wikipedia says:
Blast Chamber is a 1996 action puzzle video game developed by Attention to Detail and published by Activision for the PlayStation and Sega Saturn. It was the first non-sports four-player game for the PlayStation and Saturn. A demo was released in 1997 for MS-DOS, but the full version was never published.