This is version 1.0 of JR Life which includes the sandbox game mode. This game requires that you have steam installed to play if you don't go to steampowered.com for a FREE download of the steam client and make a steam account. When started up it might ask to install some content before you play if this does happen except it and wait for the download to finish. If it doesn't and your game doesn't work go to tools under library and download the source SDK Base 2013 singleplayer for FREE. If all goes well you should then be good to play JR Life.