What games can be played on the orignal xbox using a light gun?

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Hey all Whilst browsing amazon, i found something called the xbox light gun, or something to that effect. Basically, it is a laser gun that you point at the screen, and pull the trigger to shoot. Very similar to the way that you would in an arcade, only for much less, and in your own home! Basically, i am contemplating buying one of these guns for £8 or so. But, and here is the but. I only know of 1 game that can be played using it! (House of the dead 3). I am also aware of another game caleld silent scope complete, but that needs a different gun, which costs £33! So, my question is: What other games can be played on THE ORIGINAL XBOX that can use the light guns (see madcats light gun to get an idea of what i am on about). Thanks all