Currently, ROBLOX is only available on PCs running the Windows operating system
ROBLOX is already installed on this computer. If you want to try installing it again then follow the instructions below. Otherwise, you can just continue.
(Total download about 6Mb)
A window will open asking what you want to do with a file called Xpblox-installer.exe.
Click 'Run'. You might see a confirmation message, asking if you're sure you want to run this software. Click 'Run' again.
When the download has finished, the ROBLOX Setup Wizard will appear and guide you through the rest of the installation.