And yet another installment in the long-running Add-on series. Up to now, main mobility and actions have been used by Bob (Black) while any secondary characters are just there to make Bob look good. Not anymore. In this game, the second character will have his own unique set of actions. And to prove this, I am giving the Red man a name. He is now Joe. Also, there will be terrain challenges this time around. Enjoy. The only real difference between #4 and #4.5 is that #4.5 has a few extra glitches fixed. I guess I better explain what to do... You press different keys to do different actions. Play around a bit. See what you can do. There are actually 3 ways to end the game.