The lawsuit points to external gambling sites that invite users to play games of chance using Roblox's currency Robux.

Although there are a lot of sites claiming to give away free Robux, there is actually only one legitimate way to get free Roblox money.

Robux is the in-game currency used in Roblox, the online game platform and game creation system. Lots of different websites offer Robux for free, but are they legitimate? We can help.