Are you trying to troubleshoot a specific error while installing the game, or

If you want the best experience, the is the gold standard. It is DRM-free and, most importantly, includes the LAA (Large Address Aware) patch and fixes for the infamous "Map Bug" that plagued the original PC release.

While many users search for "highly compressed" versions (under 2GB–5GB) to save data, you should be aware of a few things:

If you are looking to create a "proper post" about downloading in a highly compressed format, it's important to balance the helpful "gaming" info with a serious reality check about safety and legality.