The games I don't own:
Earthbound, Dr. Luigi (because I bought Dr. Mario twice already), Fluidity Spin Cycle, Donkey Kong 3.
I admit, Donkey Kong Country for 3DS is a hell of a prize and anybody that doesn't own it needs to buy it. For me, the options are severely limited. I guess I'll go with Earthbound since it's legendary. But registering hundreds and hundreds of dollars in games to earn a $10 download is madness!
Do you own game&wario? If so, would you recommend me it over the other offerings (I own everything except NES remix, earthbound and game&wario)?
I personally dont like Game&Wario that much. I liked the Gamecube game, but this one isnt that great imo.
NES Remix is a pretty cool game with old NES classics, so you might enjoy that.
I have never played Earthbound... So i cant help you with that!