The Majesty of Colors
The Majesty of Colors is almost more art project than game. As a game, it's very simple, but it's beautifully done and will engage you with its interesting, if brief, story in a way that most Flash games don't.
In the game, you play a sea monster-like creature experiencing an awakening and its first encounter with humans. The controls are very simple -- just click on something to interact with or move it. The game is nonlinear; depending on whether you are friendly or hostile towards the humans at your various opportunities, you can end up in one of five different endings. The game, however, is very short -- you have only a few decisions to make over the course of the game, and can easily play through once in just a few minutes. Finding all of the endings might be a bit trickier, but it's not particularly difficult.
The graphics are in the retro-pixelated style that seems to be in vogue at the moment. To be honest, I don't think this adds particularly much to the game in this case; it just seems to be kind of a fad. The sounds are simple, but they add a kind of nice atmosphere; there's no background music, though. The writing is good, perhaps even a little unnecessarily florid (I think this is the first time I've seen the word "squamous" not describing a cell), but it complements the story well.
Overall, The Majesty of Colors is too short and simple to be a great game viewed as simply a game, but as a short story it's kind of a fun read. It's a nice, quiet, contemplative alternative to your typical frenzied Flash game.