Telltale Games is nearing the end their cycle of five episodic games for the iPad based on the original 1980s movie Back to the Future, and have announced that episode four, entitled "Double Visions" is now available. As a bonus for those just catching up to the series, the company is making the first episode "It's About Time" available for free through July 31st. All five episodes star Christopher Lloyd as the voice of Doc Brown.
