Yes, it’s old. But you’d be surprised how many people download the full version on a modern gaming PC and encounter issues. Here’s the original spec, followed by what you actually need today.
A: Yes. Codename 47 is the first game. Contracts is the third game (2004) that includes remastered versions of Codename 47 missions as flashbacks, plus new content. They are not the same. Hitman 1 Game Download Full Version