18 crates in total, 2 of each kind which randomly drops items, some of them being incredibly rare.

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45 crates in total, 5 of each kind which randomly drops items, some of them being incredibly rare.

90 crates in total, 10 of each kind which randomly drops items, some of them being incredibly rare.

225 crates in total, 25 of each kind which randomly drops items, some of them being incredibly rare.

576 crates in total, 64 of each kind which randomly drops items, some of them being incredibly rare.