Here's my start of what Atari's "Space War" should have been. Everything suffers from 30Hz flicker (oh well) but the players can have get 4 shots on screen. Or maybe I'll go with three shots per player and have two floating fuel pods.
In addition to the "combat-style" two-player game, I was planning to also have a single-player game in which a computer-controlled ship lays down red and green dots. The player is required to collect the green dots while avoiding the red dots or the computer-controlled ship.
The kernel is working, as is the basic accelleration of the players. Shot handling needs a lot of work, and I still have to get gravity working. With luck I'll be able to have gravity affect the shots as well as the players. Should make things interesting.