What are the TOP TEN greatest Video Game Cheats of all time?

This can vary from NES, Sega MAster System, Super NES, Sega Genesis, Playstation and any other gaming systems.

so far, I have 5, but those 5 can always be up for revision and so forth:

making a list of the top ten video game cheats of all time

contra and life force… up up down down left right left right b a start – 30 lives

ikari warriors… abba – continue

street fighter for super nes… up x down b l y r a – unlocks 4 bosses

mortal combat for sega genesis – a b c a b – unlocks “blood and fatality” mode

metroid – type in name as “JUSTIN BAILEY —— ——” – fully loaded and then some