In AOM, there are four "Easter Eggs" in the Lighthouse background. But to see all of them, you would have to wait more than one hour in the Main Menu- that's why they're Easter Eggs. With this you can see all four Eggs in about three minutes.
Make a backup of scenarios.BAR in your aom/scenarios folder. Then, replace the original file with the downloaded one. To see the Easter Eggs, start the game and watch. There are four Eggs: Kraken, Ancestors, Pig, and Monkey.
OBS: If the Norse background is displayed when you start the game, leave and start again until it's the Lighthouse one.
The only changes were made in the Lighthouse background scenario (the Trirreme one). They were:
Trigger Conditions - Timers (mostly from 1200 seconds to 5 seconds)
Object Placing - A revealer I placed because a God Power wasn't being invoked in Egg #2. I think that was my fault, I should've screwed up something.
Some day I became curious about opening the background scenarios in the Editor, and then, after some googling, I downloaded AoMED and found out about the Easter Eggs. Then I started modifying the timers and later, it was done. I finished this in 06/11/2012.
Special thanks to Ykkrosh for creating AoMED, which I used to add the modified scenario to game files.
Remember, if this made you smile, comment, rate and review! Also if you happen to witness any bugs, then please make a report. Thanks =)