Roblox , developed by Roblox Corporation and published in 2006, is a free-to-play online sandbox game that allows users to create games, like racing games, role-playing games, simulations and whatever else they can write in the game's programming language, Lua. Players can also play these user-created games, and buy various in game accessories with the game's virtual currency, Robux. In 2012 a mobile version was released for IOS, and a version for Android was released in 2014. It's most popular ...