At this point, this Sega Ages series is about compilations, starting off with Space Harrier. It includes Space Harrier II, Space Harrier I (Arcade, Master System, and Game Gear (hidden and not played because I hadn't known how to play it) and Space Harrier 3-D. All the fun rail shooting in the Fantasy Land in one disk!
Space Harrier arcade was the one that I didn't do a "full" playthrough on because I didn't know that there was some different control method for it, which I had unbound.
Final scores:
Space Harrier II - 3,022,800
Space Harrier (Master System) - 269,520
Space Harrier 3-D - 872,170