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I downloaded the Linux Zip file for my chromebook, now how do i play the game

(im in 6th Grade, so im having difficulty)

You cannot, linux is not the same as chrome os. There is no chromebook version, sadly. However, there may be soon, according to the developer

The latest version of chromebooks DO support linux programs: - if your chromebook supports it, that might work. Otherwise, you'll have to wait for a chromebook-specific port.