- Onet Connect Animal Online
- Connect Animal - Matching Game
- Onet Connect Classic Puzzle
- Onet Connect Foods
- Onet Connect Fun
- Onet Connect Plus
- Onet Connect Pro
- Onet connect viber animal
- Onet Connects 2016
- Onet Cute
- Onet Deluxe
- Onet Fruit 2016
- Onet Monsters
- Onet New - Classic Link Puzzle
- Onet Paradise: connect & match
- Onet Pet Animal Connect
- Onet Pets
- Onet Picachu
- Onet Puzzle - Twin Link
- Onet Vegetable
- OnetX - Connect Animal
- Onirim - Solitaire Card Game
- Online Backgammon LiveGames
- Online Bura LiveGames
- Online Checkers LiveGames
- Draughts With Friends
- Online Chess LiveGames
- Online Clabber LiveGames
- Online Dominoes LiveGames
- Online Durak LiveGames
- Online for Chess
- Online Joker LiveGames
- Online Mahjong Solitaire
- Online Play LiveGames
- Online Reversi World
- Online Sevens LiveGames
- Online Solitaire
- Online Tambola - Paperless
- Online Thousand LiveGames
- Online Bhabhi Thulla
- Online Tic Tac Toe
- Only 1 color per line
- Onnect - Tile Connect Puzzle
- Onnect Flowers Match Puzzle
- Onnect Tile Match: Onet Puzzle
- Onnect – Pair Matching Puzzle
- Onnect Onet: Tile Star
- Onword
- Opart
- Open Gifts Simulator
- Open Road For King Puzzle
- OpeningTree - Chess Openings
- Opp Ball
- OPQA
- Oran's Table
- Orb Lines, Neo Lines 98
- Orbs Match Christmas
- Orbs Match Christmas Puzzle
- Orbs Match - Swipe sort & pop
- ORCade board brain block match
- Orchard Toys
- Orchid Growth
- Orient Express Dominoes
- Origami Paper Art game no WiFi
- Original Backgammon
- Original Checkers
- Original Yatzy
- Ornament Buster
- Osmo Coding Duo
- Osmo Masterpiece
- Osmo Monster
- Osmo Newton
- Osmo Pizza Co.
- Osmo Tangram Classic
- Osmo Words
- Osmo Words Classic
- Osmosmerka: Solve Word Search Puzzles Using Serbian Latin and Cyrillic Alphabets
- Osolo
- Ostle
- OsXs
- Othello - Mini
- Othello - Reversi Board Game
- Othello - The Official Game
- Othello - TSITGames
- Othello Crush
- Othello EndingTraining
- Black and white board games
- Othello Multiplayer
- Othello Quest - Online Othello
- Othello swap it.
- Othello3D
- Othelloda Ext
- Ouija Board
- Ouk Chaktrang
- Our Bingo - Video Bingo
- Our Slots - Casino
- Our Vegas - Casino Slots
- Out of the Loop
- Outer Rim Companion
- Outnumbered XL
- Outsmarted - Companion App
- Outwitters
- Overhang
- Overpaint
- OWARDS Trivia
- Oware Master
- Owls and Vowels: Word Game
- OXO - TicTacToe