Roblox!
Roblox is an online multiplayer game that was designed for kids over the age of seven. It lets you build with different materials. There is a free version and a version where you have to pay. If you get the free version it gives you a world that was already designed and you can interact with cars, trucks, and even a spaceship. The full version where you pay for it allows you to create the world of your dreams. This game was published by Roblox Corporation.