| Map | Title | Author | Players | |
|---|---|---|---|---|
| CTF-[UTzone]-AnfraGrounds | CTF-[UTzone]-AnfraGrounds | Yes | ||
| CTF-[UTzone]-Bloxeh2k4 | CTF-[UTzone]-Bloxeh2k4 | 4-8 | ||
| CTF-U4E-SeaBase | U4E-SeaBase | 8 | ||
| CTF-U4E-YttriumII | CTF-U4E-YttriumII | 2-4 | ||
| CTF-UCBP-Citadel-Beta | Citadel | 4-8 | ||
| CTF-UCMP-Aithanarid | CTF-UCMP-Aithanarid | 8-12 | ||
| CTF-UCMP-Aquatica | Aquatica | 8-12 | ||
| CTF-UCMP-Aquatica_LE | Aquatica_LE | 8-12 | ||
| CTF-UCMP-DecaneCaldera | Decane Caldera | Unknown | ||
| CTF-UCMP2-Campgrounds | Campgrounds | 12 | ||
| CTF-UCMP2-Enlightenment | Age of Enlightenment | 16-24 | ||
| CTF-UCMP2-Vadamerca | CTF-UCMP2-Vadamerca | 10-12 | ||
| CTF-UCMP4-Talya | Talya | 12 | ||
| CTF-UCMP4-Virility | Virility | 8-12 | ||
| CTF-UCMP4-Virility_LE | Virility_LE | 8-12 | ||
| CTF-UdogzOfWar | UDOGZ of War | 4 | ||
| CTF-UED-ArboreaUnderground | Arborea Underground | 12 | ||
| CTF-UK-Underland-V1 | -UK-Underland- | Unknown | ||
| CTF-Underground-TDC | CTF-Underground{TDC} | 2-16 | ||
| CTF-UnderPressure[NC] | UnderPressure | 4-12 | ||
| CTF-UnderPressureCE[NC] | UnderPressure-ClanEdition | 4-12 | ||
| CTF-Underworld | CTF-Underworld | 8-12 | ||
| CTF-Unearthed | Unearthed City | 4-8 | ||
| CTF-Unearthed_SE | Unearthed City SE | 4-8 | ||
| CTF-Unearthed_SE_2004 | Unearthed City SE 2004 | 4-8 | ||
| CTF-Unknown | Unknown | 10-12 | ||
| CTF-UnrealEd | UnrealEd | 2-4 | ||
| CTF-UnrealPlaza | Unreal Plaza | 12 | ||
| CTF-Uranus | CTF-Unranus | 16 | ||
| CTF-UrbanChaos | UrbanChaos | Unknown | ||
| CTF-UrbanDMZ2WID | Urban DMZ 2 | 8-16 | ||
| CTF-USS Kobe | USS Kobe | 16 | ||
| CTF-UTeros-Cavern2k4 | The Cavern 2k4 | 8 | ||
| CTF-UTeros-Cavern2k4-v2 | The Cavern 2k4 | 8 | ||
| CTF-UTeros-November-PE | November-PE | 8-12 | ||
| CTF-UTLF-DiamondSword[v1] | CTF-UTLF-Diamond Sword 2K4 | 16 | ||
| CTF-UTronic | CTF-UTronic | 8-14 | ||
| CTF-UTronic_Rev | CTF-UTronic_Rev1 | 12-16 | ||
| CTF-UtterAnnihilation | Utter Annihilation | 12-16 | ||
| CTF-{UEM}SpiritOfTheNali | Spirit of the Nali | 8-12 |