Oh, I forgot Paper. Dude, have you played MadWorld? It's quite quite possible that Blob is far superior.
MadWorld was extremely fun, but the short single player mode and linearity really killed it. Its fun for a beat 'em up, but it lacks any replay value. It also doesn't help that the black/white art style is terrible for people using smaller screens.
Also, Muramasa is a bundle of fun. I'm not sure what your problem with Odin Sphere was, but Muramasa doesn't have too many RPG elements like OS did. If anything, I'd compare it to Donkey Kong Country 3's use of those kinds of elements. The homes and NPCs are part of the levels, and the level-ups are limited to the blades you meld. The game is also really fast, although the fight segments seem more crowded than fast-paced.