having an issue where the game wont even open :( a window pops up for half a second than shuts down immediately.
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Are you sure you extracted it properly, just be the 3 files, and the custom map folder, inside a folder (not the zip).
Otherwise you could try running it from command prompt, and see if it outputs any errors when it crashes. Ignore the 3 red extension errors, and 1 yellow icon warning, they're known and shouldn't ever cause it to crash. But any extra ones could explain the cause.