Although it's free to play, people will be able to buy gems for real money, that can be used to pay for items in-game. Roblox now has more than 30 million players visiting the game every day.

Ryan has frequently played Roblox on his YouTube channel and said in a statement: "I've been playing Roblox since I was three years old, and it's one of my favourites.

On Dec. 5, “Ryan’s World” is taking its latest form, as a virtual world on the fast-growing videogame platform from Roblox Corp.