Instructions
Turn on the Xbox 360 and insert the game disc into the optical drive unit.
Go to the "My Xbox" tab from the console's main menu. Select "Game Library" with the "A" button on the controller.
Press "A" on the XBLA game disc, highlighted by default from the "Recent Games" section.
Click "Install Game" from the following options menu and select your default hard drive as shown. Allow sufficient time for the game to install, depending on the disc's total size.