A small selection of Japanese RPGs (some beat em up action RPGs) available as digital download on Xbox Live Arcade.

GUARDIAN HEROES

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One of the best titles on the Sega Saturn, and an expensive acquisition today regardless of which region-version you import. Much like how Treasure blessed us with a highly affordable digital release of the otherwise stupidly expensive shooter Radiant Silvergun, Treasure gave the Xbox 360 an enhanced, online enabled, and highly affordable digital release of Guardian Heroes. Treasure may be known for their shmups and shooter platformers, but Guardian Heroes proves that they weren't just a one-trick-pony. With RPG elements, tons of characters, and several routes and endings, Guardian Heroes is an awesome brawler RPG sporting some delicious zany 2D visuals. - Jahanzeb Khan

DUNGEON FIGHTER: FALL OF HENDON MYRE

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Essentially a decent and mostly serviceable alternative to Guardian Heroes. May be worth checking out once you've gotten bored of Guardian Heroes, which honestly really shouldn't happen... like ever.

HALF-MINUTE HERO: SUPER MEGA NEO CLIMAX

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An excellent and one of a kind PSP title all spruced up and enhanced for the Xbox 360. The portability may be sacrificed, and a game of this nature is objectively ideal on a portable platform,  but the the enhanced HD remake still offers that addictive bite sized mini-game RPG quest like no other.

VANDAL HEARTS: FLAMES OF JUDGEMENT 

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While technically not an Xbox 360 exclusive as the PlayStation 3 also received the game around the same time, we still felt it was worth a mention. Konami's Vandal Hearts series was never really all that great to begin with-- even on the PlayStation-- but at least it had a gripping and noteworthy art style to it. Vandal Hearts: Flames of Judgement offers that similar style of tactical strategy RPG gameplay, but completely messes up the art direction with its lazy cartoon-like appearance. The visual change is so vast that you have to remind yourself it's from the same series.