Being a member of some game forums, one of the most interesting forum games I've come across is the "ID the screenshot" game. The rules are pretty simple:
1) A member post an image or link to it if its is very big, showing a game in action (screenshot).
2) The other members must recognize which game is it. The first one to post the right answer
must post another image for the others to identify.
3) If the game is obscure and nothing happens for a while, some hints should be given at the start or after some wrong answers. Hints are considered the hardware format, year of release, dev company, publisher etc.
Requirements: You need web space to upload your images. I've subscribed at
http://photobucket.com/ which is rather good. Make sure the filenames of your images do not have any tips. For example avoid naming them mario64.jpg, for obvious reasons.
So let's start then:
This is probably the greatest race simulator for PCs. Do you recognize it?