If I had to pick one it would have to be the secret minigame in Tyrian.

By typing in DESTRUCT in the title screen the player can unlock a two-player minigame that is sort of similar to Worms and there were also side modes that the player could pick to spice the formula, too.

Was a really nice bonus on top of an already great game. Best part is that the game's officially freeware so you can try it out for yourself.

I have two. Probably one one of which is less an easter egg and more of a little story I think some people might find funny.

1) New Game+ mode in Chrono Trigger letting you fight the end boss with the first five minutes of NG+.

2) Long long ago, back before we were getting a new pandemic every other Tuesday, my cousins had a Vectorex that I spent and unjustifiable amount of time playing, primarily because they claimed that the game 'Spike' (a Donkey Kong-esque platformer) could not be beaten. Yeah, Dark Souls only likes to think they invented the concept of You Will Die. But... they were right. I got real far in it. There were levels my cousins only saw when I was playing, but I could not beat it. Years later, I happened to stumbled across the instruction manual for Spike and was floored to discover that there was suppose to be a jump button. Seems the controller my cousins had was in less than mint condition.

In Day of the Tentacle (including the Remastered version), there's a computer just sitting there on a desk in the early part of the game. If you access it, you can play Maniac Mansion in its entirety.

For me it was finding Warren Robinett's name in the hidden room unlocked by the invisible dot. From then on, I always spent more time explring in games than following the main story line. And not just a little bit more time, I mean *most* of the time. I have a feeling that I'm not alone in that and the nature of video games changed after this first easter egg. Designers realized they had more freedom to put greater detail into their creations and players reveled in exploring it and discovering the secrets they had left for them. This change in character in the players probably lead to glitches being discovered because the first thing a player asks themself when they encounter an unexpected behavior is "Is this supposed to work this way--and I found something cool--or is this a mistake in the game?" Overnight games became a deeper, richer experience and it's changed everything.

My favorite video game easter egg is Totaka's Song solely because of the nearly 30 years of dedication that has been poured into this easter egg.

For those unfamiliar with Totaka's Song, it all started when a music composer named Kazumi Totaka was working on a game called X for the Nintendo Game Boy in 1992. Within the game's soundtrack, Totaka slipped a 19-note jingle into one of the music tracks. He took care to hide the jingle by only allowing it to play if you let the music track in question loop multiple times. After the release of X, Totaka continued to sneak his jingle into the soundtracks he composed for dozens other games including: Mario Paint, Link's Awakening, Luigi's Mansion, Animal Crossing, Pikmin 2, Super Smash Bros. Brawl, and more. Over the years, Totaka's Song has gathered quite a cult following because every new game that lists Totaka as the composer is a new easter egg hunt to find Totaka's Song tucked away somewhere within the game's soundtrack.

With 2020's release of Animal Crossing: New Horizons, Kazumi Totaka has been committed to perpetuating the Totaka's Song easter egg for 28 years (and counting), and for that reason I consider it to be my favorite video game easter egg.

More info:

https://nintendo.fandom.com/wiki/Totaka's_Song

I really liked the Doge easter egg in Just Cause 3. It was just... so random.

In the original Outcast (1999) [Made available here on GOG as Outcast 1.1], I was a child back then, exploring one of the more watery worlds you can travel to in the game, and I was quite fearful of the snake-like alien creatures that jutted out of the shallow water in the main land--signature aliens even portrayed in the cover of the game--so I quickly ran and dived on the ocean to explore the island from afar (also quite afraid that I might find an even more monstrous creature underwater, but thankfully not).

I swam to a headland where there was an orange building I could see from afar. As I approached the building, I noticed the structure had markings in red, on the wall facing the ocean. That was extremely curious, as nowhere in the game did you have such markings. As I neared it enough to distinguish the shape, I could finally read what it said, in bold letters of plain English:

"No Peeing Zone" -- Fenced with stained red contours, as if stamped with dry paint.

I floated there, looking at this obviously human sign, only visible from "outside the map", and all the tension I felt traversing the water went away as I realized I had found my very first easter egg in a game, or at least the very first element I could recognize as being one. A human message in that alien world.

It didn't make any sense to me, it was likely an inside joke, but I will forever remember this moment.

Out of one of the few easter eggs I saw, the one I remember the most was finding Arthas' sword in X-Men Origins: Wolverine.

Another one: finding a hydralisk in the single player campaign when playing WarCraft 3.

Mine would be the Minecraft one from Borderlands 2 ! Seeing big creepers and themed weapons was cool !

Assassin Creeds body in the Witcher 2

Mine would have to be my favorite Atari 2600 game Adventure. It had the very first Easter Egg in it and I stumbled on it accidently. We obviously did not have the internet at that time like we do today. So it was not something I ever heard about. For a moment I thought I had broken the game. It took me a moment to realise what was actually happening. It made my love for that game even greater because it had something special that I had never seen in another game.

The entirety of the modern world portion of Assassin's Creed: Black Flag, which no one bother to sit through.

SPOILER: It pretty much reveals that Abstergo Entertainment is Ubisoft.

Starcraft: Brood War

Beating zerg mission 9 with a sufficient amount of time to spare reveals a hidden extra story segment, mostly in the form of a playable mission, with a small group led by the Dark Prelate Zeratul investigating a remote planet and unmasking a sinister plot which fairly dramatically changes the framing for not only the character and nature of an individual known from earlier in the story, but also the place of the Protoss and Zerg races in the universe.

in the first level of outlaws you can blow up a toilet and go through a secret passage that gets you to witness a weird alien abduction! :o

Ghost Recon Wildlands, when Sam Fisher (splinter cell dude) mentions that he is the last of his generation of stealth infiltrators, then he says theres also that one guy that wears a bandana. *MIND BLOWN*'

My favorite character of all time and is Solid Snake and the MGS franchise, I loved that shoutout considering the current state of the MGS IP and unknown future.

Thanks UbiSoft :)

and Thanks GOG for this giveaway!!! <3