- U-Boat Commander II
- UFO.io - Abduct Everything
- Uh Oh! - Avoid all traps
- Ukodus Crazy
- Ukraine Simulator
- Ukraine Simulator 2
- Ultimate Alien Defense
- Ultimate Animal Sniper Shootin
- Ultimate Battle Royale PvP
- Ultimate Battle Simulator
- Ultimate Battle Simulator-Epic
- Ultimate Block Puzzle Solver
- Ultimate Custom Night
- Ultimate Dice Wars: Reborn
- Ultimate General: Gettysburg
- Ultimate General™: Civil War
- Ultimate General™: Gettysburg
- Ultimate Glory
- Ultimate Metal Trader
- Ultimate Prepper
- Ultimate Reversi King
- Ultimate Supremacy
- Ultimate Tank Defender
- Ultimate Tic Tac Toe
- Ultimate Tic Tac Toe ll
- Ultimate Tic Tac Toe!
- Ultimate War - Great Strategy TD Game
- Ultimate_Sudoku
- Ultra Dimension Defense
- Unblock 2 - let me out
- Unblock Ball : Puzzle Game
- Unblock Bar - Slide and free the puzzle blocks
- Unblock Block!
- Unblock Blue Block Puzzle
- Unblock Car: 3D Parking Puzzle
- Unblock FRVR
- Unblock Puzzle Classic
- Unblock Woods
- Uncharted Wars: Oceans&Empires
- Undead Battlefield
- Undead Dread
- UNDEAD FACTORY - zombie wars
- Undead vs Demon
- Under Attack.
- Under Par Scorecard
- UnderControl3D
- Underwater Road Construction
- Underworld Empire
- Underworld Football Manager 2
- Underworld Football Manager
- Underworlds Helper
- Unfold!
- Unicorn Evolution Simulator
- Unified Dynasty
- Unifying The Three Kingdoms
- Unique War Survivor Game
- Unite Guide
- United Front
- United Kingdom Simulator 2
- Universal Battle 2
- United Kingdom Simulator 2
- Universal Battle 2
- Universal Paperclips™
- Universe Pandemic 2
- University Empire Tycoon-Idle
- UniWar: Turn Based Strategy
- Unknown Craft Battle Royale 3D
- Unknown Knights
- Unlimited Skills Hero
- Unlimited Zombies
- Unlock Rope
- Unlock The LOCK Free
- Unmatched Air Traffic Control
- Unscramble Words
- Unstaball: Catch It & Throw It
- Untie The Rope!!
- Until Dead - Think to survive
- Upgrade Tower Defense
- Uphill Railway Track Build Pro
- Urban Drug Empire
- Internet Cafe Business 2
- US Army Critical Military War
- US Conflict — Tank Battles
- US Election Game
- US Military Sniper Shoot War
- USA Ambition
- USA Simulator 2
- USA Simulator Pro 2
- Used Car Tycoon Games