Can you find the cow? It's invisible, so it won't be easy. But believe you me: There's a cow out there. Play Find the Invisible Cow in your browser and test your cow-finding abilities. Also, your patience. (h/t Ian Bogost)
This hilarious Peter Molyneux life simulator imagines what the life of the creator of Fable and Black & White might be like. So many ideas!
Sublime browser-based strategy game Highgrounds just updated with 14 new characters and lots more. You should play it.