Having the attention span of the average 5 year old on a sugar rush, this is as far as I have got with my version of "Missile Command"
Fire missiles from three bases using left/middle/right mouse clicks.
Missile explode where you sent them if they do not hit anything on the way - allows you to fire a line of them to set up a wall !
Missile bases slowly regain missiles over time.
Game over when all three bases are destroyed.
Rocks have a chance to also explode that can set off a chain reaction...
Lots of things to add - sound, levels , cities to defend, alien space craft, high scores, et cetera.
I intend to return to this "soon" - providing nothing shiny distracts me for too long.