I'm not much of a handheld gamer,myself. However,I do have fond memories of a few. Birth by Sleep,while it made me RAGE (Terra's final boss. Critical difficulty. RAEG!) at times,it was an amazing game that I'd replay in a heartbeat if I had a working PSP. War of the Lions is also another good game that I'd replay,but not without a guide. You know the Marquis? On the castle rooftop? With is two pet assassins,and the guy you have to keep alive? Yeah. I can't win,as the VIP has all the survival instinct of one of Warframe's Infested Runners. Great game,however. I probably have to smack him with a Stop spell or something. Finally,there's Castlevania: Portrait of ruin on the DS. Hardcore Castlevania fans rag on this,primarily,in my experience,because of the art style. I never played a different Castlevania game,so I have no frame of reference,but it's a great game,with plenty of replayability,due to Sisters Mode,Richter Mode,and Armour Mode. And level caps. And "Hard" mode which just makes things Arcade Hard. And then there's the Den of Evil. Love the place. Although,I've yet to beat the Doppleganger in a fair fight...