Fairly simple game.
Basically post a screen shot [no cropped pictures...] from any video game (Don't go for such obscure games though that nobody would have a hope of knowing

), and have others guess what it is. 100% certainty answers follow up with a screenshot of another game, ancient or recent.
People might cheat using certain methods... but eh - you can always view a video on youtube and take your own screenshot.
Anyways, to get the ball rolling, an easy one: