I just read that Epic Games have made the original Unreal and Unreal Tournament freeware by allowing archive.org to host ISOs (CD images) of the original installation media.
https://www.oldunreal.com/downloads/unreal/full-game-installers/ has installers that install the games from those ISOs with the OldUnreal fan patch to make them work better on modern systems.
Newspost about this: https://www.rockpapershotgun.com/classic-shooters-unreal-and-unreal-tournament-are-now-free-and-preserved-on-the-internet-archive