- Adds Co-op Quickplay game mode for Online multiplayer.
- Adds Lens Flare and Crowd settings in the Graphics Options menu.
- Adds a new UI screen in the Controller Options menu that displays default keyboard controls.
- Improves the whammy bar sound effects.
- The star power electricity effect now displays correctly when using the Low Graphics Detail option.
- The skeleton in the Shanker Island venue now displays correctly on all supported graphics cards.

- New "Front Row Cam" option allows better performance on low end configurations, with smoother gameplay.
- Laptop specific optimizations for better performance.
- Intel X3100 graphics chips are now supported.
- A battery meter icon will display remaining battery charge on supported laptops.
- A Wifi meter will display signal strength during multiplayer games on supported laptops.

This optional patch fixes an "Emulator Detected" error that appears on some machines AFTER APPLYING THE 1.3 PATCH. This patch does not affect gameplay in any way and only resolves this emulation issue.

This patch is to be installed only after applying the 1.3 patch. The in-game version number will not change once the 1.31 patch is installed.

PLEASE NOTE:
This will only resolve Emulator Detected errors that occur after the application of the v1.3 patch. If you have had these errors before applying the 1.3 patch, this patch will not fix the problem.