I have enjoyed chinatown wars, final fantasy 3&4 and suikoden tierkreis. However I want to play more good games, so give me some suggestions? :)

I did not like TWEWY and those trauma center/phoenix wright type of games.

Already in consideration:

Chrono trigger

pokemon mystery dungeon: explorers of time/darkness is a must have game for any ds owner

No thanks, no pokemon for me. :P

But.. Pokemon Mystery Dungeon II made sabby cry.

Anyway.. knowing you..

You might like..

Grand Theft Auto: Chinatown Wars

Resident Evil: Deadly Silence

Contra 4

Touch the Dead

Any Castlevania

but in my opinion, you must have..

New Super Mario Bros.

Mario Kart DS.

Advance Wars: Dual Strike(Still looking for a copy myself)

Final Fantasy IV

FF Tactic A2 ,Advance Wars :Day of Ruin ,Rondo of Sword ,Metal Slug ,Soma Bringer ,Dragon Quest IV&V ,Etrian Odyssey1&2 and Fire Emblem also interesting.Oh maybe you should try Elite Beat Agent too.(There're more i want to recommend you but i'm lazy ,so see it yourself man.) :)

Hatsworth

Zelda?

Epic^

^ Complete list