Did Unreal II have multiplayer? Honestly don't recall. How can UT1 and 2K3/2K4 lose online services, I thought those games use dedicated servers? Anyone can host a server. There's no way to turn off online services for those games. As for UT3, I thought it was the same deal with multiplayer. They did use cloud saves for the single-player campaign and for your account in general, including saving your settings (which I wasn't happy about). So I wonder how that might f*ck stuff up.
UT3 used to use GameSpy, but after GameSpy shut down they had to release a patch to restore that cloud save functionality and the multiplayer. Now it seems they are moving to some new service called "Epic Online Services." I don't trust Epic these days, so I'm gonna assume whatever they got planned is gonna be some sh1t.
So they removed all the games in the list, including all the Unreal games, from other storefronts, including Steam and GOG? Huh, well it seems they are indeed gone from Steam, but I still see them on GOG.
I bought a physical standalone copy of UT3 at launch in 2007, but later Epic allowed us to register our keys with Steam, so that we could have a Steam copy for free. We don't see that kind of stuff anymore.