Google

Upon the release of Squid Game season 2, Google added a small game to it's site when searching "Squid Game" to celebrate it's release. The game is a browser adaptation of the "Red Light, Green Light" part of the show.

Google: Squid Game

Gameplay Video

Eduard But

A little jump and run puzzle game with some additional mini games within! The standalone release of the Geotastic Easter Egg Hunt game within a game. Can you find all 19 secrets? Enjoy this little platform er with handmade graphical assets and an original soundtrack.

Isuta no Usagi

A removed YouTube Easter egg game based on the Arcade game "Missile command" which was featured on the site in 2013.

The game would appear when you typed "1337" or "1980" in any video of the time, Turret will appear and starting shooting on missiles

YouTube: Missile Command

Google: Image Breakout was an online game built into Google Images that could be accessed by typing "Breakout" into the search tab. The game was a version of the game Breakout by Atari, but every block is a Google Image result for the game.

Google: Image Breakout

I-Mockery

Abobo's Big Adventure is a freeware parody Flash game. Inspired by various video games released for the Nintendo Entertainment System, the game features Abobo, a boss character from the Double Dragon franchise, traveling through the worlds of several different games to save his son. Developed by I-Mockery founder Roger Barr, Abobo's Big Adventure was released in January 2012 to positive critical reception.

Abobo's Big Adventure

Trailer

Atari

Polyvox

Yars' Revenge is a video game released for the Atari 2600 in 1982. It was created by Howard Scott Warshaw and was Atari's best-selling original title for the 2600.

Yars' Revenge

YouTube Snake was an easter egg game in the YouTube video play that was first included in July 2010, however has since been removed. The game was a playable version of the game Snake and was accessible by pressing up when a video was buffering.

Easter Egg Browser Games