These are the most reliable tools for handling split archives. Right-click part1.rar and select "Extract Here" once all parts are downloaded.
Multi-part RAR files require all parts (part1, part2, etc.) to be in the same folder before you can extract them. otomi-games.com_9EZLMPVM.part1.rar
Revisit the specific game page on Otomi-Games where you found the first link. Most download mirrors (like Mega, MediaFire, or Pixeldrain) list all parts in a single folder or as a series of numbered links. These are the most reliable tools for handling