Wow, this is going to be kind of tough. Lately, I don't see many things in regards of stages, but perpetual transition. It'd be a bit easier to list influential games or something like that, but here goes:
Born in October 1990
First Game: Super Mario Bros.
Childhood Game: Super Mario 64, OoT, Banjo-Kazooie/Tooie, Snowboard Kids 1/2, Tekken 3, Crash Bandicoot 1+2, Final Fantasy VII
Early Adolescent Game (How are we defining this?): Melee, Final Fantasy VIII (PC Port), Wind Waker, Metroid Prime, Starfox Adventures/Assault, Kingdom Hearts, Tales of Symphonia, Metroid Fusion, Metroid Zero Mission, Pokemon Sapphire
High School: Brawl, Kameo, Mario Galaxy 1, Metroid Prime 3 Corruption, Street Fighter 4, Phoenix Wright series, Okami
College: Final Fantasy XIII, Skyward Sword, Other M, Bayonetta, Super Street Fighter IV, BlazBlue, Tekken Tag Tournament 2, Mario Galaxy 2, Professor Layton, Fire Emblem Awakening, Street Fighter X Tekken
Currently Playing : Fire Emblem Awakening (need to finish that last chapter), Tekken Tag 2, Final Fantasy XIII; currently waiting for Animal Crossing and others; looking to get Tomb Raider used in the future.