Yeah! And Warlords for the Atari 800 (or "Castle Crisis," which is a homebrew / arcade-perfect port of the arcade version of Warlords) with some friends and real paddle controllers is a lot of fun.
If you know something about wiring you can get photocells and wire them to the paddle ports (pin 9 and 5) then move by how much light gets to the photocell. I put two in a piece of wood so I could use my hand to allow or restrict light reaching the photocell. Also fun to write a basic program to take the value and use it for the sound command. Makes some weird noise.
That seems fun. I have a kid who might love to play with one or two hooked up to the sound registers.
Edit: I know what I am going to do. My granddaughter is 5.
I am going to write a little basic program that reads these cells wired to a couple paddle ports. I have one set I can take apart for this bit of fun. We have two hands, which makes for a perfect pairing.
Press a key, and something happens on screen. Maybe the color changes with the sound, or it says, "Hello Kiddo", whatever.
And the registers, math, change.
A couple hours on this should lead to interesting time watching her interact with it all.
Thanks for the inspiration. Should be fun. Now all I have to do is get a program into that Atari. Might finally be time to get one of those SD card devices for my Atari, or a FujiNet. Something.