which game secret/easter egg remained hidden longest?

[MattyXB]

Atari 2600 VCS Peter Penguin
This site is still missing in the Easteregg Guide. Not sure why, but it was removed sometimes and not added again.

There I found a trick to get invulnerable forever. Not sure if I found it as I was a kid. And not sure if someone else ever found it out. So its maybe too a trick, which was unknown for a long long time (over 20 years).

There is only one error, the game doesn't end at 5,085 points, it end, when you don't press long enough the Joypad / stick. And the first time I try it it was at 5085 points. Maybe it takes 5 minutes till the game ends, not sure anymore.

[DDCecil]

$5 via PayPal and all my current meseta if you discover the Run Saber code (Look a few posts back). Oh yeah. The code has to actually work.

[Queen Of The Felines]

Think about it, is there any other game ever where the Game Genie let you play as someone whom you couldn't normally choose from?

A Genie code for Final Fantasy III lets you play as General Leo, including his shock attack.

Kristine

[TEXASGAMEPLAYER]

How about the sega master system game "ASTRO WARRIOR" nobody has found the code to start with the two red fire power things. SMS fans should know what I am talking about!