Nevermind the Final Fantasy VII spinoffs for the PS2 and PSP. A group of Japanese Final Fantasy fan-hackers have time-travelled in the opposite direction.
They've ported the PS2's Final Fantasy X over to the Famicom -- or its present-day software emulators, at least.
Using the Famicom's Final Fantasy II as a base, they've fit this gorgeous kissing scene:
...into this pixelated pretty: