Map	Title	Author	Players
DM-UG-SunSpeak3	UG-SunSpeak3	Unknown	Unknown
DM-Ultra	Ultra	Unknown	Unknown
DM-Umber	Umber	Jack Farnsworth III,	6 to 16
DM-Under2	Under2	Eric 'Marsfyre' Berger	2 to 8
DM-Underground3	DM-Underground 3	Unknown	2 to 8
dm-undergroundmine	dm-undergroundmine	Unknown	Unknown
DM-Underwash	Underwash	Unknown	Unknown
DM-UntamedFinal	Untamed	Maniacbob	2 to 4
DM-UntoldStorage	Untold Storage	Andrew "Mclogenog" Yoder	2 or 3
DM-UOF-Aero	UOF Aero	Sebastien NOVA	2 to 8
DM-UOF-Hibernate	UOF Hibernate	Jonatan "Thrallala" Czapnik	2 to 6
DM-UOF-Hidrotrik	UOF Hidrotrik	Odedge	8 to 16
DM-UOF-OrbitalFlux	UOF Orbital Flux	Lord Porksword	4 to 10
DM-UOF-Peak	UOF Peak	Eric "Bl!tz" Rigard	4 to 12
DM-UOF4-NyLevesLegacy	UOF4-NyLeves Legacy	Lord PorkSword	24-32
DM-URDARAT01	DM-URDARAT	Unknown	Unknown
DM-UT1-Tutorial	UT1-Tutorial	Gotenksnath	Unknown
DM-Utopia	DM-Utopia	Unknown	Unknown