- Umiro
- Umurangi Generation
- Un Pas Fragile
- Unaided: 1939
- Unavowed
- Unbound: Worlds Apart
- Unbox v1.03
- Unbox: Newbie’s Adventure (Update 21/08/17)
- Unbreakable Vr Runner v1.5.9
- Uncanny Valley v1.1
- Uncharted Ocean
- Uncharted Waters IV HD Version
- Unclaimed World v1.0.3.5
- Uncompromising Trash
- Uncraft World (Update 06.01.2017)
- Uncrashed : FPV Drone Simulator
- Uncrewed
- Uncrowded
- Undead Blackout: Reanimated Edition
- Undead Darlings ~no cure for love~
- Undead Development
- Undead Horde v1.0.5
- Undead Hunter
- Undead Overlord v1.16a
- Undead Souls
- Undead vs Plants
- Undead zombies
- UNDEADS (Early Access)
- Undefeated
- Under a Desert Sun
- Under Domain – Alien Invasion Simulator
- Under Domain – Alien Invasion Simulator
- Under Leaves v1.1.0
- Under Lock
- UNDER NIGHT IN-BIRTH Exe:Late
- UNDER NIGHT IN-BIRTH Exe:Late[st] v1.03 (Inclu ALL DLC)
- Under One Wing
- Under Stranger Stars
- Under That Rain
- Under The Ground
- Under the Ocean (Alpha 8)
- UNDER the SAND – a road trip game (Update Aug 26, 2019)
- Under Water : Abyss Survival VR
- Under Zero
- Under: Depths of Fear
- Under: Depths of Fear
- Undercover Agent
- Undercover Missions: Operation Kursk K-141
- UndercoverAgent
- Undercrewed
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