You can add up 3 players in the same game.
Co-opIf you are playing single-player mode and you have a friend or family member who wants to play Owys with you, there is no problem. Cross-Platform MultiplayerAlso you can play online with players from any supported platform. You will need them! Which will allow players to create levels, upload them and play them. OWYS was created to entertain and to make it a real challenge for players, mix of skill and dexterity.