• UniqueGames
• UTV Ignition Entertainment
• Undercoders
• Uruca Game Studio
• Unison Shift: Blossom
• unbeGames
• Undergroundies
• Ultimerse
• Upper Class Walrus
• UNKNOWN GAMES
• UUUM, Inc.
• uucgame
• 上海游鹰
• 优韵网络