Recently Unreal passed it's 20 year birthday and GOG was giving it away for free. During that giveaway I shared a behind the scenes making of Unreal video that focused on the original single player game and what later became Unreal Tournament. LGR made an Unreal 20 Year Retrospective video that goes much more into detail about the Unreal base game alongside some of it's great and not so great parts. It also talks about the Unreal multiplayer and expansions you can get as part of Unreal Gold edition.