Trackball (or mouse) to move
A,S,D to fire bases
For a simpler game, just use X (or mouse click) to fire from the center base
Full mouse capture isn't available in the web player but I've compiled a Windows executable on itch.io:
https://pahammond.itch.io/missile-command
A think I played Missile Command once in the arcades in the 80s. I remember liking the idea but didn't have the skills ,or an abundance of loose change to improve, so I promptly gave up and moved on to something else.
Early in 2021, a late Christmas present from my wife arrived: Missile Commander by Tony Temple. It was a great read and I became mildly obsessed with Missile Command and decided to work on this Pico-8 version.
First I bought a trackball to get into the spirit or the original. Next I played the MAME version for a few days.
Researching an old game is part of the fun for me and thankfully I discovered this excellent "MISSILE COMMAND DEEP DIVE" article:
http://www.retrogamedeconstructionzone.com/2019/11/missilie-command-deep-dive.html
I'm pretty happy with the result. To me at least, it captures the spirit of the original. In a chunky 128x128 pixel sort of way anyway ;)
Enjoy.