Okay, you each have to make an image following the specifications of the judge. After five (or more, depending on how long the judge is willing to wait, but no more that ten) images have been posted, the judge chooses a winner and that winner is the new judge.
If more than 48 hours have passed since the last image was posted and there are less than five images, the round will timeout: If there are 2 images posted or more, judging will start immediately; if only one was posted, the drawer of that wins, if none, the winner can choose again (or pass to someone else).
The main idea of the game is drawing a screenshot, either an interpretation of a real game or one the drawer made up, under certain resolution and color restrictions, I.E. 320x240, 256 colors. The judge chooses the restrictions, and optionally a certain style, theme or a even a specific game, although they probably shouldn't be too specific or the images will probably be quite similar.
To prevent ridiculously high resolution limits, the maximum limit you can impose is 320x240 with 256 colors.
I'll be the judge initially.
Res: 256x128
Colors: Either 16 shades of grey or 8 colors
Theme: SHOOT SHOOT FIRE KILL HIM
Go!