If you got a 3DS for Pokemon, then I would suggest getting SMT IV or Overclocked. Kinda like Pokemon, except with demons.
Is it really? I'm not too much of an RPG person but yet, I've mainly been playing Dream Team and Pokemon X....
SMT IV is definitely like Pokemon, except you don't catch demons. Instead, you either recruit them or fuse them (which is super addictive). I have always been a big Pokemon fan. but the newer installments left me wanting more. SMT kinda filled in that void.
Overclocked is more like Final Fantasy Tactics. Not an RPG, more of a strategy game, but it still has that monster collecting aspect (sort of).