I really dig this one. In the future I might suggest a 'ghost' of the last shot's arrow for comparison when making a new shot. Totally nailed the 2600 aesthetic.
I don't think I nailed it as much as I stole liberally from it. ;)
Really, it looks more like an Atari 5200 / 800 game than a 2600 game if you think about it too much like I have. lol