Instructions
Run "Roblox" Studios.
Create a game world. There are seemingly infinite possibilities of building and coding options for the world, so create whatever game suits you best. For inspiration, play the games of others to see what types of games you enjoy most.
Save your world by clicking the "Save" button in the upper left-hand corner of "Roblox" studios. When you save the game, the program will prompt you to name your Place. Name your Place something fitting. For example, if you made your Place a zombie survival horror game, an appropriate name would be "Zombie Apocalypse Game."
Visit the main "Roblox" website and log into your account.
Click the "Play" button. Select your Place from the set of options.
Wait for the game to load. Once loaded, your Place will act as a server for all other players, who can join your game.