So I just got a PS3 and I already got Assasins Creed 2, Suikoden, Parasite Eve, Xenogears, Rayman 2 and Vagrant Story, What games are must buy for the PS3 especially from the PSN? I LOVE platformers and RPGs so they are welcome suggestions but anything is fine

UNCHARTED 1, 2 & 3

Every time everyone has asked me for this I have said the same thing

Go to the store and buy the game, and don't come on this site until you have finished at least one of them

Outland
Costume Quest (a light-hearted RPG)
Fancy Pants Adventures
Spelunker HD
Trine

If you never got the chance to play the newer Mega Man games, then buy Mega Man 9 and 10 as well.

Uncharted games, LBP2 and Flower would be my recommendations.

DEAD NATION!!!!
galaga legion
Infamous: Festival of blood
Grandia

I would add god of war collection, god of war 3 and heavenly sword (if you can find it)....some of my personal favorites

final fantasy 13,star ocean the last hope international,white knight chronicles 1 and 2, resonance of fate,eternal sonata,enchanted arms,atelier rorona ,atelier totori,hyperdemison neptunia,cross edge,disagea 3 and 4,uncharted 1,2,3,heavy rain,god of war series,metal gear series,bioshock series,two worlds 2.

infamous is a good platformer, demons souls and dark souls are great wrpg but guessing since you have suikoden you like jrpgs more like me, star ocean 4: the last hope is pretty good, i liked ff13 but thats not the popular opinion. idk much about what good games are on psn cuz i dont buy digital that much. you can get castle crashers which i found an incredibly addictive game on psn. little big planet 2 is THE platformer to get since you can make your own levels and such

Critter Crunch is a fun little puzzle game
LBP 2 best game on the PS3 :)
Batman 1 & 2
infamous is fun
Limbo
Valkyria Chronicles
Disgaea 
Enchanted Arms is a fun game 

What are your favorite genres manuelf?

For PSN: Chrono Trigger, and Chrono Cross. Two excellent JRPG's, Chrono Trigger is probably the best JRPG Square Enix has ever produced to most. XenoGears was a great pick too, so I say just play those games. Maybe try a PS1 era Final Fantasy too.

For PS3: Uncharted 2 and 3 (Not 1, 1 is really annoying, glitchy, and crap compared to UC2), InFamous 1 & 2, Mass Effect 2 (My favorite game of this gen), Final Fantasy XIII, Valkyria Chronicles, Fallout 3, and if you love plat-formers, you might like Ratchet & Clank: Tools of Destruction.