Eternal Legacy may be something of a Final Fantasy XIII copycat, but it fills a gaping hole in the iPhone game library. This is an action-filled Japanese-style RPG that never slows to a crawl. Something interesting is always happening on-screen, from well-written cutscenes to fast-paced battles. The combat system just moves, reducing that “grind” feeling that drags down so many other RPGs. Plus, it’s a great-looking adventure, from the vistas in the distance to the buckle-laden outfits worn by the heroes. So, yeah. It’s a riff on Final Fantasy XIII. But it’s a very good one and something any RPG fan will enjoy, especially at a very attractive price.