It can be all that you listed. A screen shot, map, as long as its a level of the game. I understand sometimes games look different than their cutscene. So, anything that you listed will work. Sometimes the cutscene looks just like the game.

So, whatever you want to do will work. As long as the image is 1200X1200 pixel image of what the game play looks like. It could very well be the screenshot but not always like I explained all games are different.

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