Fan formed a company along with Rich Werner and Kurt Pfeffer called All Yes Good to further develop the game.

The game received positive reception for its humorous art style and its addictive gameplay and is often compared to Plants vs. Zombies.

[1][2] The player plays as a titular octopus, named Octogeddon, who decides to seek vengeance against humanity after watching a video of a chef cooking sushi.

[5] On August 21, 2012, fifty employees, including Fan, were laid off from PopCap as part of refocusing on freemium games for social media and mobile devices.

[6][7][8] Days after he was laid off, George Fan started working on a video game called Octogeddon for the 2012 Ludum Dare contest.

[9] Ludum Dare contests involve having a designer create a video game from scratch in 48 hours with the theme picked for the particular year.

[10] Octogeddon was met with positive reception in the contest, inspiring George Fan to continue work on the game for several more years.

[10][11] A few years after the prototype was created, All Yes Good started officially developing the game,[11] with Fan as the designer, Werner as the artist, and Pfeifer as the programmer.

[15] That same month, PCGamesN, a news site dedicated to PC gaming, offered to give away eight beta Steam codes for people to be able to get Octogeddon before its release.

They noticed similarities in art style and gameplay structure of starting small and slowly adding more to the challenge of the game, but they didn't think that Octogeddon was as good as Plants vs. Zombies.

[3][2] Angharad Yeo from the Australian Broadcasting Corporation criticised the gameplay, finding the permadeath aspect of Octogeddon, forcing the player to play the first level over and over again, to be "grindy" and "dissatisfying".