Like it's being done with Unreal, both the UTPG community patches for ver. 440-451b and the OldUnreal community patches for ver. 469a onwards have the actual blessing of Epic Games. Case in point: "2023 Year in Review".
Banned in China: This game is the only Unreal game banned in Germany, to the point of being the only entry not included in that local edition of the anthology. And yet, it still manages to be very popular.
Bonus Material: The Dreamcast version of the game comes with a 19-track soundtrack, as well as two playable maps for the PC version: the DC version of "Barricade" for Deathmatch-based modes, and "Hood" for Domination.
Breakout Character: Loque, a customizable bot from the Practice Session ladder, became famous among fans for having his Accuracy set as high as possible by defaultnote which means that any shot he takes, at least with hitscan weapons, will hit his target, making him an absolute terror when he's on the opposing team and has access to the sniper rifle. First he was given his own match in the ladder of the Game of The Year Edition of UT (he shared a match with other 5 fighters in the retail version). Then, when Unreal Tournament III featured the Necris as the primary bad guys, he returned as one of the toughest opponents in the campaign and the first Necris you fight against, if you follow the right path.
Drimacus as one of the default bots in the customizable bot list and Drimacus at the end of the Deathmatch ladder are two different characters, however, the latter has the appearance the former had in the early betas.
Ice Weasel, one of the deathmatch ladder combatants, started as a customizable bot.
Dueling Works: With Quake III: Arena, which came out two days after it. In the immediate sense UT won, scoring slightly higher in reviews and selling slightly better, but in the long-term Quake III was the real winner, being the go-to shooter for actual Tournament Play, and while third-party use of their respective engines was about even (and it took Epic Games two more iterations if their engine to truly dominate the market), games based on the Quake III engine ultimately had more lasting influence on later games, particularly with the inception of Call of Duty four years later.
Since this game has all of Unreal's original assets (sans maps and music), this was to be expected. With the right cheat codes it's possible to use elements of the original game such as the Acoustic Dampener (a silencer) and the Nali Seeds/Healing Fruits. Of course, since this game is a highly moddable game, many user-made maps feature these "hidden" items. A few mods such as Monster Hunt even add Unreal's monsters into the levels for additional fun.
There're also some mutators which were unfinished, such as Minigun Arena and Impact Arena, as well as a gametype (Tournament Darkmatch) which doesn't have any associated maps.
"GT started doing promotion for Unreal Tournament before the new rocket launcher was finished. They produced a lot of marketing material with old screenshots showing the Eightball launcher from Unreal. If you look at the gold trophy used in the print ads, you'll see the characters at the top are holding eightballs, a weapon that isn't in Unreal Tournament."
Fanwork Ban: In a very, very rare instance, not only was the development teamnote More specifically, Cliff Bleszinski and Brandon Reinhart against the ZeroPing mod for considering it unfair, but also coded the ngStats servers in such a way that it prevents stats from being recorded from servers running it.
Cedric "Inoxx" Fiorentino (the mapper behind CTF-Face) released a Deathmatch version of the Skaarj Generator level, as DM-Gen][.
T. Elliott "Myscha" Cannon (the mapper behind the original incarnations of Deck #16) released a symmetrical version of the asymmetrical CTF-Command as CTF-Command][.
Throw It In!: Lead animator James Green put a weapon slot on top of the Nali Cow just for kicks, but the rest of the team liked it. And that's how the Nali Cow made it into a playable character for the Epic Bonus Pack and the GOTY edition.
Urban Legend of Zelda: No. There's no Redeemer, there's nothing on top of the red mountain, no anti-gravity boots and no secret rooms in CTF-EternalCave.