I've noticed that you can play a pretty big amount of Land/Ware games on the 3DS, not sure if that is the console with the most Land/Ware games on it, i did a list of the games available.
Wario Land:
-Super Mario Land 3: Wario Land : VC.
-Wario Land 2: VC.
-Wario Land 3: VC.
-Wario Land 4: Ambassador only.
-Wario Master of Disguise: DS cartridge.
I tend to call it the Wario machine for a reason, And it's not just because the name sounds cool.
But yes the 3DS is basically the best console for Wario, you can play almost every Wario Land game on it, and a good chunk of the Warioware series as well. (Even without the ambassador aspect, but it definitely makes it better.) Hell combine that with the Ashley/Warioware stickers+themes and the Warioware crossover with Rhythm Heaven Megamix, and you have what's practically the Wario machine.
There is also the NES version of Wario's Woods, via the VC, but yeah, the 3DS easily has the best and largest selection of Wario games that you can play one way or another.
