one of the best easter eggs i did find is the one at Loop hero where you can kill the devs of the game, but you need to make one place of the road be affected by 6 diferent area items, to fight them, it's funny and really hard...

For me the best secret would be in Ghost Master for freeing Stormtalon in "Spooky Hollow" location. It's bit tricky but really cool because you need to use your ghost powers to create large storm with Gust, Rain, Gather Winds and finally Distant Thunder to call lighting on dead tree in the middle of the lake which will free Stormtalon. He also kinda resembles god of thunder Thor since he also has mace :). It's one of the best games I played, can recommend it to everyone.

Metal Gear Solid 2:

Ruining Raiden's reputation with his girlfriend Rose & the Colonel by ringing them whilst doing perverted things such as:
Going into the toilets with a 'lady' magazine equipped, pressing up against swimsuit posters, being peed on, looking up hostage's skirts, taking photos of cleavage etc.

It was so ridiculous & unexpected to have dialogue recorded for things like that, especially some of the more obscure ones discovered by people.

It is probably the fake crash in Crash Bandicoot 3, when I was a kid I used to play it a lot with my cousin. He wanted to discover every secret of the game, I helped him and we spend like 2 weeks collecting every gem and relic, once we defeated cortex in the second battle he tought there was no othersecret and left the game. Then one day I was bored and played again just for fun and I saw him, the fake crash!! I was scared and surprised at the same time. It was 8 am on Monday and I called him to see that secret, he even skipped classes that day xD. We tried all ways to reach him and when we thought he was only in the first level. He was in the Coco level!!! Them we tried again to approach him thining he was a secret boss. The last thing we tried was to complete the game again 2 times buuut...nothing happened. We were disappointed and one day browsing fake crash on the internet we saw that it was just a secret. It was fun to try fighting him anyways.

For me, it's the two T-Rexes in the cavern below the Great Wall of China in Tomb Raider 2.

Having only played the first two levels of the first Tomb Raider, I knew the dinosaurs were a thing but never encountered them. I didn't expect to see them in TR2 so when the first emerged from the darkness roaring (if you recall the pitiful draw distances) I freaked out and ran straight past looking for a hiding spot - only to run into the second.

Of course, I found an alcove and spent the next few minutes gunning them down with the infinite ammo pistols, but that initial encounter was a terrifying and memorable moment that sticks with me more than any other easter egg since.

Silent hill 3 toilet.audio egg. or the hack n lash game Snakes nightmare MgS3.

Scarface Bloody Bathtub easter egg in GTA Vice City

Exploding sheep in Warcraft 3 (Bah Ram Ewe!)

For me it would have to be the secret weapons in Prince of Persia: Warrior Within.
Different swords, all unbreakable unlike any other secondary weapon in the game. While the Light Sword is the easiest to obtain (I first found it very much on accident), it is actually what one would call a weapon. However, I have more memories of the ridiculousness of the other secret weapons. I mean, what other games let you wield an actual flamingo as a weapon? Or how about a teddy bear?
I am currently playing Dead Space 2, and I discovered a similar weapon that refreshed the Prince of Persia Memories from my childhood. At some point you a big red foam finger as a weapon, In game it is referred to as a hand cannon - which is ridiculous on its own - and all the sound effects are made by Isaac himself, going bang-bang and pew-pew as he fires its primary and secondary shots respectively. Just like PoPWW, it is absolutely bonkers in both narrative and gameplay sense.

My favorite easter egg would definitely be John Romero's head in Doom II! Just imagine my surprise, I was getting so frustrated because I didn't know how to defeat the final boss, the Icon of Sin; I kinda knew you needed to do something to its forehead, and although I was concentrating my attacks there, I didn't know if they were actually causing damage, since there isn't a very clear indication of it. I just kept going up the rising pillar, taking a shot and going down again, getting killed shortly after.

In a fit of gamer desperation, I just ran at the boss with no sense whatsoever, and I suddenly found myself inside this little room, with a guy's impaled head looking straight at me. It was also pretty weird that the severed head produced a hellish scream, everytime I attacked it. So I spent a few tries thinking that this was actually the Icon of Sin's true weak spot! After realising that was not it at all, I laughed at the ridiculous situation, and that helped me cool off to attempt my original plan again; I kept going for the forehead, until I beat the game.

It was only a few years later, that I realised it was the head of John Romero himself. It truly goes to show just how much fun a programmer can have while creating a game, to the point that they take a bit of time, just to place those joke features; I love it and I hope they keep on doing it until the end of time.

My favourite is the first one I remember ever seeing. King's Quest 2. The Batmobile makes an appearance. I was a young kid at the time. I had no idea what Easter Eggs were. To me, everything in the game must be there for a reason and is obviously a part of the plot. I spent a long time thinking about how I'd get the Batmobile and what I'd use it for. Was there a secret panel in the cave that gives me access to the car? What do I need to drive for? How does it make sense to have Batman as a character in King's Quest? Those were all questions I had. It turns out it was totally irrelevant to the story.

My favorite easter egg is in Everquest. They have a memorial dedicated to Brad McQuaid in a zone. He passed away at age 51 and this is thier tribute. I find it pretty touching. I didn't know it was in the game until I came upon it one day. I thought it looked pretty interesting so I read the gravestone and looked it up online. This is how I found out it existed in game. When the game came out in 1999, this was not in the game. It was an update 2020.

40+ years ago, I begged my parents to buy the game "Swords and Serpents" by IMagic for the Intellivision. I accepted the "Wizard's Challenge" and completed the game which revealed a secret code. I sent the company a letter with the code and my return address and a few weeks later I received a poster of the game.

I still have that poster and the included letter. Kid me loved it.

My favourite easter egg is the special encounter with the Guardian of Forever in Fallout 2.

Not only is this a reference to the famous Star Trek original series episode "City on the Edge of Forever", but it actually connects together Fallout 1 and 2 in a mindblowing way!

In Fallout 1 you, the Vault Dweller, are searching for a new water chip for Vault 13 after their own chip broke. This is the whole motivation that sets off the entire series of games... but why did that chip break in the first place? You are led to believe that it was just normal wear and tear, but this is far from the truth.

In Fallout 2 the player is now the Chosen One, a grandchild of the original Vault Dweller, trying to save their tribal village by seeking a garden of Eden creation kit. This quest seems standalone, not strongly connected to the events of the first Fallout. But while the player is exploring the wasteland, they can came across a mysterious giant stone portal in the desert... the Guardian of Forever, which has the power of time travel! Entering this portal actually transports the player back in time, to a long-ago Vault 13, before the events of Fallout 1. After exploring the vault, the player finally finds a computer with a working water chip - and by tampering with it, causes the water chip to break before returning to the future!

This means that the entire quest of Fallout 1 was started by the player in Fallout 2! By breaking the water chip in the past, the Chosen One makes it necessary for the original Vault Dweller to leave the vault.

But hold on! The Chosen One is a grandchild of the Vault Dweller, and the only reason their tribal village exists in the first place is because the Vault Dweller traveled the wastes in Fallout 1 and was exiled from the vault...

So the quest of Fallout 1 only exists because of the Guardian of Forever in Fallout 2, and the quest in Fallout 2 only exists because of Fallout 1! This means that the entire storyline of both Fallouts 1 and 2 is one giant time travel paradox!

This is an ingenious easter egg, because it is a special encounter that can easily be missed by most players, but for those who find it it gives a whole new perspective to the plot. It also gives an interesting new view on the hero's journey of the main characters of Fallout 1 and 2: the Vault Dweller and the Chosen One are not just randomly chosen for their heroic paths, but rather they choose each other through a predestination paradox of time travel.

I can't pick a favorite so i'll share one that happened today.

It was in Enter the Gungeon. I was playing the rainbow run which is a game mode that allows you to get one chest each time you enter a floor and you can't open normal chests because a guy will be sitting on them.

So there is a chance that this guy will appear standing on a chest praising the sun and when you approach the chest, it bursts into flames.