Help in GameMaker

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Are there any resolution(room size) limitations for the opera game jam submissions? or some kind of screen ratios?
I want to try and make a game for the Opera GX Gamejam, im not 100% with GMS yet but I am learning it and am confident in coding, the only problem is, im not great at Pixel art. If your good with pixel art, msg here or dm me on Disc: Super ShadistarY#8472
eu nao cosigo baixar o gamejolt meu celular quebrou e eu so tenho pc. oque eu faso ?