If you manage to buy a legacy Steam key, it can still be redeemed and downloaded.

If you do get a copy running, you will likely need the or "GFWL Remover" mods. These community-made patches: Remove the broken login system. Unlock DLC that is otherwise inaccessible. Fix crashing on Windows 10 and 11.

Used DVD copies for PC still exist, though you may need community patches to bypass the login requirements. 🛠️ Essential Fixes for Modern Systems

Unfortunately, for digital purchase on most PC platforms, including Steam and the Microsoft Store. 🟢 The Challenges of Downloading Delisted: Microsoft removed it from stores in 2013.