ProtoMasons

Construct Airships and wage war in a sandbox world populated by floating islands, sprawling skies and adventure. Ride on ships and build them while your motley drive you forward, toward exploration. Persistent player servers and much more await!

Space Station 13 (ss13) is a multiplayer role-playing game. Originally created by one person named Exadv1, development has been continued by members of the fan base.

"Escape from VA11 HALL-A’s Glitch City to Saint Alicia, an idyllic tourist paradise with an upscale bar called N1RV Ann-A. But opulence and extravagance are merely smokescreens: the artificial island hides a seedy underbelly. Its dystopian economy touches all aspects of life as bar patrons contend with mafia extortion, human trafficking and other sordid crimes. For bartender Sam, trouble hits close to home. Her relationship with her partner Leon, who moonlights as a Yakuza, is on the rocks as she works hard to care for their 8-year-old son, Tony. Is their relationship dead in the waters of the caribbean sea? Or will love prevail in the unnatural city?"

Gamecraft is a game maker, where you can build your own physics games from blocks and components without the need to write code. You can also play many games that have been created and shared by others in the community.

Internet Cafe Simulator is an internet cafe business simulation game. Build the best internet café in the world!

Schoolbreak.io is a fun online multiplayer game about students trying to create as much chaos as possible in school and teachers trying to save the school! Once the break starts, it's your task as a student to produce as much chaos as possible to drive the chaos level up. When the level reaches 100%, the students win and the teachers get fired! If you play as a teacher, your job is to protect the school - try to catch the students in the act and get them detention! But be careful, if you get it wrong you have to explain yourself to their parents! Decide - Will you save the school or devastate it?

a game about gardening in space

Ice Cream Simulator is a game about making ice cream.

ClanGen is a game that lets you generate a Clan and then follow their story as it unfolds, perhaps influencing some of their decisions along the way. With, quite literally, millions of unique cat appearances to generate, multiple biomes and camps to live within, and hundreds of events to discover, ClanGen is full of possibilities! What will your Clan look like? A pixel Warrior Cats game with randomly generated cats and personalities. Grow your clan and discover what lore you want to make! A fan continuation of Clan Generator by just-some-cat.

Semicolon Island is a multiplayer-focused sandbox building game, which aims to give its players large amounts of freedom to create anything their minds can come up with.