All right, here are the three games.
In order to win, you will need to email the names of all three games, the developers of all three games, and the common theme that ties all three games together to email@example.com. The first correct email that drops into my inbox takes the prize! Good luck!
EDIT: Yeah, they are too hard. So I will drop a couple hints. The first and second games are both for the Apple II. The last game is for the ZX Spectrum.
EDIT 2: All right, all right. It’s obvious I made these way too hard. So if I don’t have a correct entry (and right now I have no entries whatsoever) by tomorrow (Saturday) at 12 noon Central Time, I will post some additional hints.