Groupees are currently running another Be Mine charity bundle, which is predictably stuffed with a mix of great, decent, niche and deeply average games. However, the headline act is easily Ittle Dew, which currently costs three times as much on OUYA and was briefly an exclusive. It also happens to be brilliant: a Zelda parody that also manages to be competent and exciting in its own right.
You can pay anything for The Whispered World, Mini Motor Racing EVO, Depths Of Peril and Splatter - or beat $5 for Ittle Dew, Eador, Angelica Weaver and Ring Runner. I'd suggest grabbing Ittle Dew with the latter option.