Interesting choice. I like the arcade version the best. That one infuriated me a bit (not being able to destroy the rolling xenos with a grenade unless it's *right* on top of them, rather than them rolling into the explosion? That was really wrong!).
1. How could you not expect Escape from the Mindmaster to not be there?!?!?! 2. My understanding is that Sinistar for the 5200 was made from scratch. 3. Xenophobe - yes, it can be a pain to kill those rolled up Xenos but the game keeps bringing you back. 4. Gorf CD is a homebrew release of the arcade Gorf. It is as arcade perfect as it comes. It is also extremely rare! 5. Gordo 106 and Zaku are both platformers. Gordo 106 is hard to find but it was an original cart release for the Lynx. Zaku is a recent homebrew release. 6. Kristoff has reason to be proud with those two games!