Just because Pong was the first video game to be made, doesn't mean it was a prototype. Other games could have come along without Pong existing. And your attempts at changing the subject from the game's maybe-stolen status are in vain. I don't care what if it's an homage or an ode, if it's stolen, it's stolen. There's nothing that can change that.
Nice try, stating that this was the start for video games is a true statement and you may say that this game isn't stolen, but that doesn't change the fact that it says G4TV in the corner.
Copter with health, power-ups and better physics. It's better than every other "longest lasting game contest" entries I've seen though. I'm happy that an actually good programmer entered.
Overall the game was pretty boring and once a unit is destroyed, you can't build a new one, so you should be able to build more units and upgrade them too.