A glitch has been discovered that will allow anyone who owns Modern Warfare 2 to play the full versions of certain arcade games by quick launching the game from the Modern Warfare 2 title screen.

At the moment it appears the games that can be unlocked include:

* Metal Slug 3
* Metal Slug XX
* Fatal Fury Special
* Samurai Shodown II


To perform the glitch do the following:

1. First download a trial of one of the above games
2. Launch your copy of Call of Duty: Modern Warfare 2
3. When the game gets to the press start button screen leave it there
4. Press the guide button on the controller
5. Select Quick Launch and select the game you want to load.


The game will load up as a full version, Xbox Live play, achievements and all the games features will work perfectly.