Games/Series you recommend are MUST PLAYS at least once in a Life time?

[Conina]

Monkey Island 1 - 3, Day of the Tentacle, Indiana Jones and the Fate of Atlantis, The Longest Journey, The Book of Unwritten Tales 1 + 2, Deponia: The Complete Journey, Pirates!, Portal 1 + 2, Psychonauts, Overlord 1 + 2, No One Lives Forever 1 + 2, Banjo Kazooie + Tooie, Ace Attorney series