- Olympic Math-Second Grade
- Olympus Dash
- Olympus Defense TD. Rising In Rome Gods La Guerre De Dieux
- Olympus Rising: Hero Defense
- Om Nom Nom Seonkyoung Longest
- OM Nom Puzzle
- Om Nom: Merge
- Om Nom: Run
- Omaha Poker: Pokerist
- Omar & Hana
- Omar Sharif Bridge Card Game
- OMBible
- OMBY
- Omega flowey
- Force Omega:Arène de combat
- OMJ - Oh My Jokes
- Omni Crosswords
- Omni Duo: Valley of the Crystal Ice Sky - Endless Survival, Earn Upgrades
- Omnigrams
- Omra Quiz Live
- On fire : basketball shots
- On Instruments
- On My Own
- On Point Mecha
- On Point!
- On Target Math Skills
- On The C Floor
- On The Enchanted Forest
- À la ferme ~ Touche, regarde, écoute