One Million Checkboxes

One Million Checkboxes is a free web-based incremental game developed and released by American software engineer and video game developer Nolen Royalty in June 2024. The game consists of a web page containing one million checkboxes, which visitors can check or uncheck. Upon release, all visitors saw the same state of the checkboxes, leading them to interact with each other by selecting and deselecting the same boxes. According to Royalty, the website took him two days to develop.

Although Royalty expected the site to receive no more than a few hundred visitors, the game received thousands of participants and involved more than 650 million check and uncheck actions before it was shut down two weeks after it began. Methods such as Internet bots, scripting languages, and hacking were used to rapidly alter checkboxes.

The game received an overall positive reception. Multiple publications described the game as addictive and praised its simple premise, while others criticized the usage of bots on the website. In 2025, Royalty released One Million Chessboards, a website containing one million chessboards, as a successor to One Million Checkboxes.