- Ultimate Steel street fighting:Free multiplayer robot PVP online boxing fighter games
- Ultimate Warrior
- Ultimate Word Whizzle
- Ultimate YOYO Fun
- Ultra Ball Flow
- Ultra Bounce - endless hopping
- Ultra Dash
- Ultra Reaction
- UltraBounce!
- Ultranium 4 - Breakout Shooter
- Ultranium 5: Crazy arcade game
- Ultranium3D
- Competing for the battle
- Umbrella - MeepMeepGames
- Umbrella Drop
- Umbrella Drop!
- Umbrella Falling Hardest - Parachute in the sky
- UMCG Anatomy Gym
- Umuro Racer
- Unblock 3D: Draw Cube Square
- Unblock Brain - Logic puzzles HD
- Unblock it! Red car. (ad-free)
- Unblock Parking 3D
- Unblock Puzzie Game Free
- Unblock Puzzle - Block Escape
- UnBlock Taxi! unblock Puzzle
- Unblock the gold bar! Unlock
- Unblock Water Pipes
- Unblock Water Puzzle
- Unblock Wood Puzzle Puzzle
- Unblockaball
- Unbox 3D
- Unbroken Soul
- Unbutton!
- Uncake
- Uncharted Territory VR
- Uncle Monty's Bingo
- Undead Attack! Pinball Lite
- Undead vs Demon
- Undead Walking Experiment
- Undefeated Champions Of Chess
- Under Attack HD
- Under Attack!
- Under Attack.
- Under the Deep Sea
- Under The Rubble: Physics Game
- UnderControl3D
- Underground Crew
- Undersea
- Undersea Matching World
- Undersea
- Undersea Matching World
- Underwatch
- Underwater City
- Underwater Garden -NoahAqua-
- Underwater Sea Splash
- Underwater Shooting
- Unearthly Child
- Unfold!
- Unfoldit — Paper Brain Game
- Unforgiving
- Unicorn And Friend Color Book
- Unicorn Cafe
- Unicorn Cake Baker & Icy Slush
- My Unicorn Cake Maker Bakery
- Unicorn Candy Maker Fun
- Unicorn Catch
- Unicorn Color Switch
- Unicorn Coloring Book Sparkle
- Unicorn Coloring dressup
- Unicorn Colouring Games - Art
- Unicorn Colouring Games Kids
- Unicorn Cookie Chef
- Unicorn Cooking Mania Games