Oh man were do i begin? for my 3DS my absolute impossible dream list of games that i know exist would look like:
Pokemon Y
Pokemon ΩRuby
Fire Emblem Awakening
TLOZ Ocaria of time
Scribblenauts Unlimited
Bravely Default
Bravely Second
Monster Hunter Ultimate 4
Resident Evil Revelations
One Piece Unlimited World Red
Shin Megami Tensei IV
Persona Q SOTL
Samurai Warriors Crhonicles 3 (replaces 2)
Final Fantasy Explorers
Senran Kagura Burst
Code of Princess
Shovel Knight
The Keep
Gunman Clive
SteamWorld Dig
Codename: STEAM
Atelier Roronoa which looks awesome already
One Piece Grand Battle X
Yokai Watch
Yokai Watch 2 (the latest one that hasn't come out)
Pokemon Art Accademy
Legend of Legacy
Colors 3D
Fantasy Life
Azure Striker Gunvolt
Kid Icarus Uprising
Attack on Titan TLWOM
Mighty No9
Xenoblade Chronicles
and maybe Super Smash 3DS
that's already all of my money ever
Edit: i forgot Majora's Mask!
Edit 2:Now that i think of it i'm actually missing a lot of games
Edit 3:i whish i won the lotto
