Some indie games have such beautiful pixel art that it's hard to imagine that they aren't made by big-name developers. Because It's Fun, Fay! is one of those indie games. Released as an entry for the TIGSource Procedural Generation Competition, it's a game that just oozes beautiful sprite artwork. The procedural generation of the levels just makes it all the more impressive.

You must take your two characters, Fay and Corn, and navigate them through a castle filled with traps, monsters, and puzzles. The characters each have different movements and actions. Fay jumps, throws items, and progresses from the bottom of the screen to the top. Corn flies, shoots boomerangs, and progresses from left to right (which corresponds to Fay's bottom to top; the level is just rotated 90° counter-clockwise). The map and final boss are randomly generated each time, so each playthrough is a new experience. It also supports single-keyboard co-op, one player controlling each character.