Are all the Online Games at Slingo.com free? Leader_Mike Updated August 28, 2020 02:26 Follow Yes. All games in our Online Games category are free to play once you have registered and activated your account. Related articles I want to play an online game. How do I do that? Does it cost coins to enter a game? What is a Support Ticket? What is the Quick Play button? What's new in the game chat?