: A popular alternative to a full downgrade is using the "CNC3Original" mod . This mod restores the original 1.0 unit stats and campaign difficulty without requiring you to change the actual game files.
: Steam users can use the Steam Console and SteamDB to download specific "manifests" (older versions of the game) directly from Steam's servers. Command And Conquer 3 Tiberium Wars PC Game Dow...
If you meant "download features" or general game capabilities: : A popular alternative to a full downgrade
If you are looking to downgrade or manage game versions, here are the common community-driven methods: Community Downgrade Methods Command And Conquer 3 Tiberium Wars PC Game Dow...