It's a neat take on a puzzle game, and can be a fun time-waster here and there. The customizable difficulty is really neat and each character plays so differently that they change the rules completely. Shovel Knight is good for a standard run, but Specter Knight only heals by defeating enemies, while potions will actually damage him. This led me to trying to acquire items to give him as much snowball power as possible where I can get a chain/combo going and mercilessly mow through everything because I've got the item that boosts my attack the higher my combo meter is. It's really satisfying to get a good run here.