Users of this version cannot access official Steam Workshop mods—a massive part of the A Hat in Time community—or official online multiplayer ("Online Party").
Unofficial repacks from untrusted sources are common vectors for trojans, cryptocurrency miners, and ransomware. The "build" number is often used by malicious sites to appear legitimate and current in search results.
Extreme compression (repacking) can sometimes lead to corrupted data, resulting in crashes or missing textures that are not present in the official version. Official Recommendations