The makers of the Humble Indie Bundle have returned with a new offer, this time an 'alpha' release of a new retro-styled platform shooter called Voxatron. The game runs on all three major platforms and buyers will get all future content and gameplay updates as Voxatron progresses towards release. Unlike previous Humble Bundle offerings, Voxatron is the only program available, but as with previous offers, the money donated is divided by user choice to developers and charities.