LostGryphon said:
Senran Kagura: Burst (All of the ecchi beat-em-up!)
Ehh, I dunno if I would recommend that. It has to be in your ball park, since it's not that good. I mean, there are framerate drops in that game, so that's kind of awful for that beat em up. But thanks for telling me what I can use to fill up the time between now and smash bros for 3DS.
OP: Well, Smash bros for 3DS is looking good right now. But let's talk about ones that are out already.
-Git tales of the abyss if you haven't played that one yet. It's great.
-Kingdom hearts 3D.
-Kid icarius: uprising.
-Crimson shroud(eshop only if you can handle that.)
-And I can echo the sentiment of EOIV and devil survivor

verclocked. As well as luigi's mansion 2(as it's known here in europe).
-What more... Some more eshop recommendations then:
-Like pokemon? Get pokemon trozei/link battle! Fun little puzzle game if you wanna waste some time.
-Liberation maiden. It's OTT, but definitely. Takes some getting used to but you'll get there. Like kid icarus.
-Mighty switch force if you like platforming goodness. I suggest to start with the first one, since it's easier to play than the 2nd one. That one's basically an expansion to the first it feels like.
-This one depends on if you like harem anime pandering BS, but conception II is one I had fun with. Definitely a neat RPG for me. It has its problems though, so do read some reviews on what it actually is.
-If you like old school dungeon crawling mixed with pokemon, get devil summoner: soul hackers. It definitely shows its age in the later portion though, since it's literally a marathon dungeon.