Xbox One is getting Roblox, the inventive build-your-own-game online experience. It’s free to download, and it will come with 20 curated levels and modes built by fans.

Roblox is getting cross-platform play between the Xbox One, the PC, and smartphones, starting later this week.

Roblox is live on Xbox One. Players can download it for free and start playing a list of 15 player-created games chosen by the Roblox staff. These cover a number of genres, such as action and shooter.