Large games are often split into smaller "parts" (like .part01, .part02) to make them easier to upload and download. You cannot open this file by itself; you need all the parts (usually 50+ for a game this size) in the same folder to extract the contents.

Ensure you have every numbered part from the set in one folder.

Cracked games often lack the latest official patches, leading to bugs or crashes that aren't present in the legal version.