make sure you're playing the latest version, it should say v.06a on the title screen. It isn't in the initial release - it was included in the final 'stable' build. It will be in the cell phone on the bottom left.
so umm i think i fucked up, i download the version 06a and install it replacing the last version but now my saves don´t work, is there something i can do or i am fucked up?
