So here is how the game goes. First you need to use your current RPG character that you use all the time. No making a new character to match the scene, that is cheating. To begin you have to check out the scene the last player placed for you. Then make an introductory sentence recapping the scene (you may mention how you got into that situation but that is optional). Proceed to write the story until whatever little problem is solved. The post can be as long as you want. After you have written your post put a whole new scene for the next person to play with. The scene you put down should be kept vague so the next player has some room to work with.
Lets say the lasst post said "Underwater and surrounded by hungry sharks"
I would write my post as if my character was in that situation.
As OmegaMekix held his breath he looked around at all the surrounding sharks. Not only was his lungs screaming for air but the sharks all looked hungry enough to try human flesh. One of the larger sharks lunged forward. Using his nanobots Mekix created a shield to block the shark and started swimming to the surface. Every time a shark got close enough he would use his nanobots to make a shield to keep them away. Eventually the sharks left knowing they wouldn't get close enough to a meal. As his lungs were burning from the lack of oxygen he finally pierced the ocean surface to drawn fresh air back into his lungs. OmegaMekix survived his underwater encounter with the sharks.
After writing my scene I would then skip a couple of lines and type down the scene for the next player. The game begins with the scene I'm putting down. Have fun.
In front of a giant, prehistoric T-Rex.