So far, you can pay anything and you'll get
Beatbuddy: Tale of the Guardians
(the first 3 are new Android debuts!)
Then, if you pay more than the average (at the time of writing, it's just $2.79) you'll get:
Monster Loves You
& potentially more (they always add more)
Yeah, they always add more, so get in while the getting's good.
You know that Humble Bundle helps with charity and indie game devs... so it's definitely worth it, as individually it's about $113.