Overboard!

iOS

OXXO

iOS + Android

Okami HD

Nintendo Switch

Overcooked 2

Nintendo Switch

Oddmar

iOS + Android

Old School RuneScape

iOS + Android

OPUS: Rocket of Whispers

iOS + Android

OXENFREE

iOS + Android

Ovivo

iOS + Android + Windows Phone ...

Operation Dracula

iOS

Obslashin'

iOS + Android

OlliOlli 2: Welcome to Olliwood

PlayStation Vita

Only One

iOS + Android

Oddworld New 'n' Tasty

PlayStation Vita + Steam

Out There

iOS + Android + Steam ...

Oscura

iOS + Android + PlayStation Phone (Xperia Play) ...

Oddworld: Abe's Oddysee

PlayStation Phone (Xperia Play) + Steam

Organ Trail: Director's Cut

iOS + Android

Oh! Edo Towns

Android + iPhone

ONE (New N-Gage version)

Nokia N-Gage (1st Generation)

Orcs & Elves II

Mobile

OutRun 2006: Coast to Coast

Game Boy Advance + Sony PSP

Ouros

iOS + Android + Steam ...

One Punch Man: World

iOS + Android

OXENFREE II: Lost Signals

iOS + Android