Just a warning about the latest mobile bundle:
Timelines: Assault on America Premium is NOT drm free, it requires a google+ account to be able to play, without it the game won't create a profile. I have contacted the developers and humble bundle requesting they put up a new apk because the bundle is advertised as drm free yet this is keeping me from playing the game because I refuse to sign up to any social networking rubbish.
I doubt that anything will come of it but I thought I'd best warn you all as I know how passionate about drm a lot of gogers are.
Yup, I just checked it out myself and can confirm. Ironically enough, the dev apparently made a special build just for Humble as the title screen/menu states "The Humble Bundle" just above the game name, but forgot to remove the account lock/profile features...