What games are worth checking out for the 3DS? I have Luigi's Manson only.
Kid Icarus Uprising -- On rails and land portions, very funny and cute, if you enjoy Sakurai's games then you'll love this
Animal Crossing New Leaf -- Comfy times ahead
Etrian Odyssey IV -- a retro style RPG. Not very grindy, high level of customization, almost non-existent story so no prior experience is really required
Donkey Kong Country Returns 3D (if you never played Wii one) -- ****ing hard platformer that is 100% better than its Wii version imo
Fire Emblem Awakening -- waifus, strategy, a lot of focus on relationships and you can play it casually or hardcore
Super Mario 3D Land -- another Mario game, it almost feels like it takes 3D Mario elements and mixes them with sidescrolling Mario. Really good use of 3D.
eshop:
Pushmo, Crashmo -- puzzle games that use 3D. Your goal is to reach the top of structures by pulling stuff and crashing stuff.
Mighty Switch Force 1 and 2 -- puzzle platforming with speedrunning elements. first one has you use a gun, second one has you use a firehose. I'd consider 2 an expansion to 1 so I'd only purchase if you really enjoyed it and want more. And also kickass music, worth checking out by itself.
Mutant Mudds -- collectathon with platforming
I'd skip out on Dillon games unless you actually like tower defense. It didn't do anything for me.