The MMO Roblox is performing phenomenally well on mobile. According to Sensor Tower's estimates, the game has now crossed $2 billion in lifetime revenue globally across iOS and Android.

If you want to play alone or without being disturbed by other players, here's how to appear offline in Roblox.

The social gaming platform "Roblox" is iPhone gaming's biggest earner with $3 million in revenue per day, and Apple gets 30% of that.