Complete playthrough. One of Telltale's last games before they really blew up with The Walking Dead. I always enjoy a good time-travel story; while BTTF is relatively tame with the range that it attempts to cover and there are plot-holes aplenty, it's still solidly entertaining with some nice character work that builds through the series. It's technically quite limited - the navigation puzzle-solving is a bit clunky at times - but the game engine does the job. Those puzzles range quite a lot in quality - there's a fair amount that makes little sense and where a walkthrough may be a preferable approach, but this improves in the later episodes as the developers seem to find their feet with the theme.