The whole 1st series can be pre-ordered, offering a free Puzzle Agent copy and $1 donated to the Michael J. Fox Foundation for Parkison's Research.
Back to the Future screenwriter Bob Gale has been working with the studio to shape the game's debut series. Telltale have even landed actor Christopher Lloyd to reprise his cult classic character Doc, with AJ Locascio voicing Marty McFly.
Check out the official Telltale Games'for more.