- Offroad Limousine Taxi Service
- Offroad Modern Rikshaw Sim
- OffRoad Mountain Bike
- Offroad Mud Truck Driver
- Offroad Oil Tanker Transporter
- Offroad Oil Tanker:Cargo Drive
- Offroad Pickup Truck: Hill Dri
- Offroad Police Jeep Simulator & Cop Driving Game
- Offroad public transport bus & 3d driver simulator
- Offroad Rickshaw Driving
- OffRoad Rover Stairs Challenge
- Offroad sports car driving & 3d drifting stunts
- Offroad Transport Farm Animals – Truck driving & parking simulator game
- Offroad Truck Evolution Driver
- Offroad Truck Parking Challenge : Ultimate Racing & Driving Mania
- Offroad Tuk Tuk Mountain Climb
- Offroad Van Driving Simulator & 3d driver duty
- Oil Tanker Impossible Up Hill
- Oil Tanker Supply Truck 2023
- Oil Tanker Transporter Driving
- Oil Tanker Truck Sim
- Oil Train Simulator Driving
- Okaïdi Planet Challenge
- Old Castle Escape
- Old clock and sweets' parlor
- Old MacDonald had a Farm Games
- Old Man's Big Green Farm
- Old Man's Journey
- Old Nesebar VR
- Old School Musical
- Old School RuneScape
- Oli'sCongoRiverRun2
- OLYM
- Omega Vanitas
- Ominous Objects: Lumina Camera HD - Hidden Objects
- Ominous Objects: Trail of Time HD
- On My Own
- ON-SEN - escape game -
- Once Upon a Fairy Love Tale【Free dating sim】
- One Button Travel
- Once Upon a Fairy Love Tale【Free dating sim】
- One Button Travel
- One Epic Knight
- One Escape!
- One Gun: Stickman offline game
- One Level 2 Stickman Jailbreak
- One Level 3 Stickman Jailbreak
- One Level: Stickman Jailbreak
- One Man's War
- One More Button
- One Night: Ultimate Edition
- ONE PIECE Bounty Rush
- ONE PIECE TREASURE CRUISE-RPG
- OneBit Adventure
- Oops! Zombies
- Open 99 Doors
- Open House: Meet Friends
- Open It!30 Doors
- Open Puzzle Box