This alternate method of playing Roblox on your Chromebook only works if you or a friend has a Mac or PC with the game installed, and in the latter scenario allows you to access their computer remotely. To play Roblox at any time going forward, click on the Launcher button in the bottom left-hand corner of your screen and choose the game's icon.
Now that you've enabled Google Play on your Chromebook, it's time to install Roblox.