Re: I got a 3DS!
heres a bunch of retail games in no particular order (some might be download only depending on the region, tho)
rhythm heaven megamix (demo available)
-if you like rhythm games, you can also check out:
--hatsune miku project mirai dx (da)
--rhythm thief and the emperor's treasure (da)
--theatrhythm final fantasy: curtain call (da)
fire emblem: awakening (da)
-if you like this game, you can also check out:
--fire emblem echoes: shadows of valentia
--project x zone 1 and 2 (da for both)
kirby planet robobot (da? might depend on the region)
-if you like this game, check out:
--kirby triple deluxe (da?)
--super mario 3d land
smash bros 3ds (da?) ((smash ultimate is better than this in almost every way, so only get this if you're sure you won't have a switch for a while)
phoenix wright: ace attorney trilogy
-if you like this, play:
--ace attorney: apollo justice, ace attorney dual destinies (da) and ace attorney spirit of justice (da), in that order
--professor layon and the miracle mask (after playing PL and the Last Spectre on DS) and then professor layton and the azran legacy
warioware gold (da, depending on region)
the legend of zelda: majora's mask 3d
-if you like this, then you should play:
--ocarina of time i guess
--legend of zelda: a link between worlds
etrian odyssey untold: the millenium girl (da, and the save file carries over iirc)
-if you enjoy this game, check out the other games in the series on 3ds (and ds). theres a lot of them!
Kid Icarus Uprising
and now for a list of a bunch of random download games, once again in no particular order
this time they're sorted vaguely by genre because its easier to just lump all the platforming games kinda together because i have a lot of them
platformers
shantae and the pirate's curse
-shantae and shantae: risky's revenge are also good (and available on 3ds), and the story will make more sense if you play those first, but pirate's curse is the priority because its the best one
shovel knight: treasure trove
azure striker gunvolt 1 and 2
VVVVVV if you havent played it on one of the 50 other consoles it's on
mega man legacy collection
steamworld dig
-steamworld dig 2 is also on 3ds. its made for better consoles like the switch but if you dont have access to any of those, you probably can't go too wrong with the 3ds version?
mighty switch force 1 and 2
puzzle
the pushmo series
-my personal favourite is stretchmo, but pushmo is a good starting point
the box boy series
pocket card jockey
rhythm
dedede's drum dash (expanded minigame from kirby triple deluxe)
harmoknight
theres too many vc games out there for me to go into that, but i will say that mole mania is a fun little game boy game that's worth looking into
if you'd like to see my ranking of other games i own, including my vc games, take a look
here. (its a little out of date, but it should be fine for your purposes
finally, a bunch of ds games
the world ends with you
kirby super star ultra
kirby mass attack
rhythm heaven/paradise
warioware touched
wario: master of disguise (this one is an unpopular opinion, you might want to look into the game yourself to make sure you'll actually like it)
the professor layton series
ace attorney investigations: miles edgeworth (after you play ace attorney trilogy)
ghost trick phantom detective
mega man zero collection
mega man zx and zx advent
elite beat agents, and then if you wanna go full weeb, osu! tatakae! ouendan 1 and 2
mario and luigi: bowser's inside story
pokemon mystery dungeon, explorers of sky
this is just a small portion of the 3ds and ds librarys, based on what i've played over the years. there are still a bunch of games that i havent listed here that are great, but this should be enough food for thought to get you started
Merry Christmas saltman, enjoy your 3ds