The four-way cannon is a gimmick that appears only in console/PC versions of Sonic Generations. It is able to launch Modern Sonic up, down, left, or right. When a four-way cannon appears, it usually indicates a shortcut.
The four-way cannon appears exclusively in Act 2 of Rooftop Run, Planet Wisp, Crisis City, Speed Highway, Chemical Plant and Seaside Hill. Unlike the Cannon, Sonic cannot simply approach the four-way cannon, but must jump or fall into it to provoke an action. Once inside it, Sonic curls up into a Spin Attack. A green arrow will then appear to direct the player, who must hold the analog stick in the direction that the green arrow is pointing and press /. The four-way cannon will then align its rings in the shape of a barrel and launch Sonic in the designated direction.
Should the player shoot Sonic in the wrong direction, he will be launched with much less force. If the player waits too long to launch Sonic, he will automatically fall out of the four-way cannon.
- This gimmick is very similar to the Accelerator Gun as they have the same attributes.