Simxius is a great SINGLEPLAYER and MULTIPLAYER(sorta bugged) game
The game's Multiplayer build has been released to the public as a Beta build for testing.
There's two modes, "Sandbox" and "Host Craft", the Sandbox one is where all of the Players can build and ONLY destroy their own builds,
but be CAREFUL, because if you have a build and you try to delete someone's build, it will delete all of your builds instead.
Host Craft, is when ONLY the HOST (first player to join the lobby) can build and delete blocks, other players can't build or break blocks.