Hello Kitty Cafe is celebrating My Melody's birthday by allowing players the chance to get a free backpack to keep within Roblox.

Armed with the virtual cash, Roblox players can buy everything from in-game items for their avatars to passes that grant perks for select games.

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.