Before extracting, use a hash checker. A legitimate version 1.0.9 NSP for Balatro should have a specific SHA-256 hash. Compare the hash of your balatro.nsp inside the RAR to community databases (like No-Intro) to ensure it hasn't been tampered with.
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Use a free extraction utility like , 7-Zip , or The Unarchiver . Right-click the file and select Extract Here .