The name is highly specific and likely shorthand for a specific release. Based on the naming convention (e.g., for "All In One", RDR2 for "Red Dead Redemption 2"), it may be a compressed repack or bundle for that game. Guide to Extracting Split RAR Archives To successfully use this file, follow these steps:
: If part 05 is corrupted, you may need to redownload just that specific file. AIOURDR2DD.part05.rar
: If any part is missing, the extraction will fail. The name is highly specific and likely shorthand