Downloading a highly compressed version of Call of Duty: Black Ops 2 can be a great way to save space and bandwidth while still enjoying the game. By following the steps outlined in this post, you can download and install the game on your PC.
: If you already own the game or are looking for a safer multiplayer experience, the Plutonium Project is a popular community-driven client. It provides dedicated servers that protect against the "Remote Code Execution" (RCE) exploits found on official Steam servers.