OpenTTD - An open-source clone of the classic game ...
Toontown Rewritten - Toontown Rewritten is a Free to Play, Browser-based, MMORPG, and Virtual-World video game developed and published by Disney.
Stardew Valley - Stardew Valley is a 2D Awesome, Action, Role-playing, Crafting, Top-down, Building, Sandbox and Single-player video game create by ConcernedApe and published by Chucklefish.
Animal Jam - Animal Jam is really a virtual world for kids that includes real animal and plant information towards fun storylines which are maintained by National Geographic educational content.
Aztec Tribe - Aztec Tribe is an Engaging, Action-Adventure, Strategy, Building, Management, and Single-player Simulation created and published by Big Fish Games.
Club Penguin - Welcome to Club Penguin, a virtual world for kids guided by an unwavering commitment to safety and creativity