You can only answer once until someone else answers. Also, just ONE guess at a time.

So for example:

What game is this?

member 1: Minesweeper
member 2: Tetris
member 1: Tic Tac Toe < member 1 could now answer, since someone else answered after his original answer...

The first person to post the right answer will win provided that they follow the procedure shown above.

*Current games:
Guess That Game [insert console here] Edition - concept provided by firo773.
Fill In The Blanks
Screenshot Game

That's all for now :)