OK. It works like this: I am basically a DM or GM of a game world. You (“You” being a general generality to everyone) are Patric, a lowly foot soldier in ranks of the Prince who desires for greater things. I draw 1 panel, narrate what happens, and the first person to reply with what should happen next will get to decide what I draw next (sometimes I'll include 2 or maybe even 3 responses all in one strip, so go ahead and post if you think your idea is a good one). If anyone messes up and gets Patric killed, the person who responds the first after Patric dies gets to restart at the last place Patric was alive.
Example?:

Response: “Talk to my best friend Charley.”
Response:

Response: “Head over to the carnival.”
Response:

Note: You don't have to write “response,” unless you want to. Have as much fun with it as possible, and don't be sad if you kill Patric. Try and be as original and smart as you can with it, and eventually the plot should evolve depending on what everyone wants to do!
2nd Note: Pick up where I left off that that 3rd panel.
Have fun!
EDIT: Just to be a little more specific, this is like a Text RPG game. You can tell him what to do, but you can't tell him what will happen when he does it.