While it's not ideal there is something actively played out there, with plenty of custom maps and kind of recent..
I'll copy-paste a previous comment about it here:
Though development is long dead, the servers were taken offline recently and it was delisted by Epic, people are still playing the Unreal Tournament pre-alpha (commonly called UT4) which you can get here: https://www.ut4ever.org/downloads
The download should come with the unofficial update which gives access to the private servers, I play on the Unreal Carnage servers regularly which often gets 8-15 players at a time, more than enough for some deathmatch. Would love to see some more people around!
(Mind I'm in New Zealand, which is why my ping is so high, the netcode handles it well somehow)
I have seen extremely little racism on Lemmy, but my instance is defederated from those places (.ml, Hexbear etc.) they blocked us themselves so we didn't even have to do anything. So I definitely dont have the whole picture.
Hmmf.