Butters said:
Is that game in which a geek saves the world from two naughty tentacles?
Yeah, or that is,
it's the game where Bernard (a nerd), Hoagie (a stereotypical fat rock-hard teen) and Laverne (a mental girl) saves the world from an evil Tentacle (Purple Tentacle) and his not-so-evil-friend (Green Tentacle).
They do this with traveling in time, but something goes wrong, so one is sent to the future, one of the past, and one not at all.
It's the sequel of Maniac Mansion.