Two is tough...
Star Castle Arcade (have it) There is nothing like it and was my favorite back in the arcade, especially when the machine was turned up to full volume, I had a comfy stool, and a fresh big gulp.
Space Rocks (don't have it) It is exceptional.
Until DKVCS is released, then I'd replace space rocks on that list with that since I have Asteroids and it is sufficiently enjoyable. DK VCS and some of the other DK homebrews simply blow away the unplayable original coleco release.
As good as some of the space invaders homebrews and hacks are, I think the original 2600 version simply rocks. Don't get me wrong, the original arcade Taito/Midway version is great too, but something about 2600 invaders just cannot be topped. Maybe playing the hell out if it as a kid has everything to do with it.
I never was a Pac Man fan, but PacMan 4K is excellent. Imagine if that was released back in the day.
Edited by Zonie, Sun Mar 11, 2018 4:36 PM.