The site onemillioncheckboxes.com is just that: a site that has one million checkboxes to check (and uncheck). But it has become something more.
As The New York Times describes it (the bold emphasis is mine):

By providing a blank slate to users, One Million Checkboxes has also cycled rapidly through the stages of internet maturity, serving as something of a microcosm of the joys and horrors of digital life. First there was a period of exploration, in which users worked together to check as many boxes as they could. Next came creativity, as some began filling in boxes to illustrate hearts or, in more cases, crude drawings of male genitalia. Then things devolved, as they often do online, into all-out war. Steven Piziks, 57, a science fiction author in Ann Arbor, Mich., began checking boxes on Tuesday because he thought it might be soothing. He soon noticed someone else working behind him and unchecking every single one. He started checking even faster, and about half an hour later, the site’s built-in tally said he had checked more than 1,000 boxes. It was not soothing at all. It felt “like a metaphor for all of social media,” Mr. Piziks said. “We go into it thinking it’s going to be wonderful and collaborative and interesting, and it kind of turns into a fight.” Some bad actors on the site are human mischief-makers who take a perverse joy in undoing other people’s work. Others are simply bots that have been programmed to uncheck boxes en masse, Mr. Royalty said. (He has been working to contain them, with mixed success.) Those bots have been particularly infuriating to Frank Elavsky, 34, a Ph.D. student at Carnegie Mellon University who has checked more than 20,000 boxes in his “fight for the cause.” He got in a spat on X with someone he suspected of tinkering with the site’s code in the name of unchecking. “It became kind of personal,” he said. “I’m like, ‘You foul, foul demon. How could you?’” The website’s creator has been watching this all play out at a kind of omnipotent remove.

The freedom that the site gives users also comes with risks. In addition to lewd drawings, users have checked boxes in order to spell out profanities and at least one racial slur.

And that’s why I think OneMillionCheckBoxes.com shows we can never have nice big things again on the Internet. We can have big things, like OneMillionCheckBoxes.com, but you eventually get bad actors, bots, and racists. And we can have nice things with a significant investment in content moderation, but that doesn’t scale. Right now Threads.net is trying to prove me wrong, but in the end they will go for scale over nice, and when that happens, it’s only a matter of time before it all declines. Just like Facebook, and Twitter/X and others.

It will be interesting to check out (and maybe even check) OneMillionCheckBoxes.com in July 2025 and see if it is still active, or whether it succumbed to a combination of bad actors and ennui. I’m not optimistic.

For more on this, see: One Million Checkboxes, ‘Useless’ Internet Game, Lives Up to Its Name – The New York Times

Also the Washington Post has an interview with the creator, here.