Great art style and music. Also very fun to play.
The Probing: Special Delivery
A downloadable game for Windows
You play as a postman who has been abducted by aliens and must now flee being probed. Jump, dive and slide your way through the alien space ship for as long as you can, and why not collect some of the mail while you're at it!
Download the zip.
There's no extra files so you should be able to run it straight from the zip.