Day of the Tentacle

Day of the Tentacle‘s predecessor Maniac Mansion stood out from other adventure games in 1987, as it still does today, for allowing the player to select her own “party” of three characters, each with his or her own special skills, from a total of seven possibilities. He held to that resolution throughout the rest of his time at LucasArts; his 1990 game The Secret of Monkey Island was at least as good as Maniac Mansion, but it owed its goodness to its writing, humor, art direction, and puzzle design, not to a similar formal ambition. Grossman:

Grossman and Schafer did reuse those elements of the earlier game that amused them most: the mad scientist Doctor Fred and his equally insane wife and son; the rambling old mansion where they all live; a memorable gag involving a hamster and a microwave; a pair of wise-cracking sentient tentacles, one of whom became the centerpiece of their plot and provided their sequel with its name.

Source: www.filfre.net