Brickadia - Make anything, brick by brick.
Roblox - Reimagining the way people come together.
Polymer - Polymer is a library that uses the latest web technologies to let you create custom HTML elements.
HiberWorld - HiberWorld is a website that allows you to make and play 3D levels for speedrunning
Veloren - A multiplayer voxel RPG. Inspired in games such as Cube World, Breath of the Wild, Dwarf Fortress and Minecraft.
KoGaMa - Kogama is a Massively Multiplayer Online, Sandbox, City-Building and Adventure-based video game.