The game originally began as a smaller interactive Google Doodle game to celebrate the 2020 Summer Olympics and Paralympics in Tokyo, but after the events were delayed to 2021, Google were effectively given another year to expand it into a full-fledged video game with at least two and a half hours of content. This made it the largest interactive Google Doodle produced in the company's history. Their engineers were surprised at the large amount of side quests and dialogue they were able to fit into the game, but they struggled to get the game to run on mobile phones, tablets and desktop computers as it needed to be displayed on Google's front page. They managed to get the game to remember save data by saving it to users' local storage, so the game could be continued at any time. It is not fully known what the game's technological specs are, but the level design and sprite animations were created by Google in Adobe Animate, while the animated cutscenes were created by Japanese animation studio Studio 4°C in Toon Boom Harmony and Adobe After Effects.