U.S. Telegraph
 

Uchronia
 

Ugo!
 

Um Krone und Kragen
 

Um R(h)um und Ehre
 

Um Reifenbreite
 

Unanimo
 

Unanimo Party
 

Union Pacific
 

United Square
 

Unlock! Escape Adventures
 

Unlock! Exotic Adventures
 

Unlock! Heroic Adventures
 

Unlock! Mystery Adventures
 

Unlock! Secret Adventures
 

Unlock! Timeless Adventures
 

Uno
 

Uno Boomo
 

Unter Spannung
 

Up and down
 

Urban Sprawl
 

Utopia