On Steam, you can uncheck campaign or multiplayer in DLC management. Install only Zombies to save space.
If your goal is to save storage space without risking your PC's security, use official methods: 1. Selective Installation (Steam) call of duty black ops 3 highly compressed pc game install
Installing Call of Duty: Black Ops 3 (BO3) using "highly compressed" files—often called —is a popular method for users with limited data or slow internet, as it can reduce the download size from over 180 GB down to as little as 42 GB . However, this process comes with unique technical requirements, performance trade-offs, and significant security risks. 1. Understanding Highly Compressed Games On Steam, you can uncheck campaign or multiplayer