- The Skaarj are heavily inspired by Predator, including such homages as dreadlocks and wrist-mounted blades.
- The Vortex Rikers prison ship is named after Rikers Island. Appropriate, since they're both prisons.
- The multiplayer map DmAriza has the Quake shape.
- The name of the Glathriel Village from Return to Na Pali comes from the human hex in in Jack Chalker's "Well of Souls" books.
"Will you die for this? http://www.ocrana.de"
- Also, there's an Easter Egg which guides to a secret. It has the Unreal Tournament clan Ocrana's logo, and the translator has the following message:
- Na Pali is named after a state park on the Hawaiian island of Kauai.
- Word of God stated that CTF-Face, a.k.a. "Facing Worlds", was inspired by a third-party map from the first Unreal.
- DM-Morpheus is inspired by a scene from The Matrix, and its name was taken from Morpheus, one of the main characters.
- The name of the map DOM-Sesmar is taken from Ramses's Sdrawkcab Name.
- AS-Overlord ("Operation Overlord") is inspired by D-Day.
- The hallways guiding to the flag bases in the Bonus Pack 1 map CTF-Hydro16 form the number 182.
- The Chainsaw has a Shout-Out towards Doom.
- "Its been 5 years since I've used one of these."
- The Sniper Rifle is a custom scoped M16.
- When you play in the campaign, in the Venom team, two of the characters are named Ada and Lovelace, named after the first woman programmer in the world.
- Two members of the ladder team Red Claw are named Pestilence and Plague.
- One of the Female Commando (Dark Phalanx) characters is called Nikita.
- One of Xan Kriegor's quotes is "I am the Alpha and the Omega". The phrase is also used as the description for the "Godlike" difficulty that practice bots can be set to.
- One of the ladder bots is called Toe Cutter.
- The secret Easter Egg room in DM-Codex has a shootable message saying Pretty fly... ...for a white guy.
- One of the members of Thunder Crash in this game and UT2004 is named Othello.
- A Dummied Out taunt for the male commando characters has them saying "It's clobberin' time!"
- The main body of space authority in the game is named Terran Colonial Authority.
- The Izanagi corporation, introduced in this game, is named after the eponymous deity of Japanese Mythology.
- The Seagoat is a reference to the zodiac symbol Capricorn.
- The spaceship of the final mission is called "The Dorian Gray".
- Aida is stated to be a 3-D Chess champion, and the board in her quarters looks vaguely familiar
- The UT2003 intro, where Malcolm, Brock and Lauren are presented as a team, has a lot of influence from WWE.
- AS-Junkyard, from its description to the objectives of the map itself, references Scrapheap Challenge/Junkyard Wars.
- The LBX-7683 asteroid, where the Assault map AS-RobotFactory takes place, is a reference to the LBX networking protocol.
- DM-Leviathan features this reference:
"They say keep your friends close, and your enemies closer. You won't find any friends here, so reach out and touch someone."
- DM-Inferno explicitly references The Divine Comedy.
- A taunt from robot characters goes "Faster. Stronger. Better."
- Two maps, one for Deathmatch and another for Capture The Flag, are given the name "Grendelkeep".
- If you finish a match without allowing the opposing team to score a single point, the announcer will yell "Flawless Victory!"
- The Nightmare voicepacks have varying shoutouts to horror films:
- Two of the Thunder Crash members are called Picard and Riker.
- Gorge's team, their suit, and their name (Juggernauts), are shout-outs to The Juggernaut from X-Men.
- The Bridge of Fate maps (one for Bombing Run, one for Capture The Flag) are modelled after an environment from The Lord of the Rings (more precisely, from the movies).
- One of the taunts found in the Dummied Out voicepacks have the characters saying "I'm sorry! Did I break up your concentration?"
- Continuing with the Shout Outs to Mortal Kombat, the announcer will yell "Finish Him!!" before you do a Coup De Grace.
- Some of the Liandri bots taunts are references to internet lingo.
"You are teh suck!"
"Logging crash dump."
- There's also these two references to Microsoft Windows:
"I see the blue screen."
- The Juggernauts are also keen on references:
- One of the challenges have three slow but tough males going against three fast but weak females. It's called "Tortoise vs. Hare"
- Another of the Challenges has Malcolm going against 4 undead characters. It's called "Day of the Dead".
- Anubis's Ladder mentions that he was offered an offer he couldn't refuse. It's exactly what happens at the end of the Ascension Rites.
- One of Apophis's taunts is "Damn, I'm good!"
- One of Devastation's adrenaline combos, "Head Turret", has her activating mounted turret defenses, not unlike those of Fulgore's No Mercy.
"if (Target.Color == Self.Color) ProtectTarget(); else DestroyTarget()"
- Many of her Ladder challenges have references to programming concepts. One of her matches is labeled "GOTO: Next Match", and the description of another match has a C++ fragment.
- One of her Ladder challenges is called "The Next Generation"
- One of Raiden's ladder challenges has a reference to the Netherrealm, stating that he hates to use their powers, but in order to advance in the Tournament, he must do so.
"You fight like Johnny Cage!"
- Some of his taunts are, obviously, references to Mortal Kombat:
"My patience for mortals has worn thin."
"Only your fear can defeat you."
- His Coup De Grace is one of his Fatalities from Trilogy.
- The challenge where he's unlocked is called "Unreal Kombat 2". A previous challenge where Anubis faces both Malcolm and Raiden is called "Unreal Kombat".
- A challenge where the player has to defeat two Raidens mentions the Elder Gods.
- Outside of MK references, one of his Ladder challenges pits him against the Skaarj Torgr and the human female Sappire. The match is called "Beauty and the Beast".
- One of Raptor's challenges is named "Carnage++", a reference to the C++ programming language.
- One of Sobek's taunts is "It's better to burn out, than to fade away."
- One of Szalor's Ladder challenges is called "Armed and Dangerous".
- The achievement for beating Chapter 4 is called "Not In Kansas Anymore".
- The achievement for defeating the Final Boss in Insane is called "Fear The Reaper".
- Get the "Combo King" award 15 times, and you get the "Don't taze me bro!" achievement.
- It turns out that the Nanoblack referenced across the series exists in Real Life.
- Jester is designed around Epic Games' president Mike Capps' sister.
- The Ronin team has "Damn, I'm Good!" as a taunt.
- This game's version of Othello has a symmetrical version of Kratos' facial tattoo. Given Kratos and Othello are both voiced by Terrence Carson, it's likely an Actor Allusion.