Master Reboot, a game I originally purchased from Wii U eShop last Halloween is 75% off on Steam and it's really worth the discount price! I recommend purchasing the Bundle, because that comes with the game's great soundtrack(and an artbook, but the soundtrack is worth the extra couple of bucks!) It's also on sale on eShop, and it's best played through a TV screen imo
It has an unique story, it's visually one of the best indie games I've played on the Wii U, and it has a spot-on soundtrack and puzzles! It's a little short, but it does have some replay value in the form of rubber duckies(and 20 Steam achievements) that are scattered throughout the courses that you can find(each duck explains the story a bit!). You can read the reviews on Steam if you need to hear more but I'd get the game if I were you!