Over the last couple weeks, I have been screwing around with electricity and robotics, though it's pretty tough. But today a good idea came to me and I researched it (@Google: Thanks!) and it might work.
This is my idea:
Do you know at like the old arcade places they have those guns (aka "light guns") that you point at the screen and shoot? Well, I researched how they work, and they use something called a photodiode (I have 10!) which detect light and make electricity. A electric triger-switch ($2 USD) is attached, and some other components.
So what you would do is make a black screen (no light emitted) in AM and have white or light colored (sorry African-Americans, I'm not being racist, it just wouldn't work cuase you need a light color for the photodiode to work) characters on the screen. The light gun would not be connected to the computer, since that would be too difficult, but an LED on the light gun would light up when you shot an enemy. In AM, you would just have frames that update every 5 seconds, like a slidshow.
What do ya think? It might need a lot of edits as I work on it though.