The dentist's office request that gave Windows its iconic fish screensaver

The most iconic screensaver of the '90s - the fish that swam across Windows desktops - was born from a dentist's office. Ed Fries, co-founder of After Dark and former vice president of Game Publishing at Microsoft, recently explained to Jesse Petrilla that an artist working on a scene set in a dentist's office wanted an aquarium because "there's always an aquarium in a dentist's office." She asked if she could have a little part of the screen with fish moving in it. Fries, a video game programmer, responded, "I'm a video game programmer. I can make fish move on the screen. Give me the fish, and I'll make them move." That simple exchange launched what became the After Dark fish screensaver, a fixture of early '90s PC life.

Fries made a looping animation for the artist, then went back to ask for bigger fish characters for "this crazy idea" he had. With larger fish in hand, he stayed late at the office and turned his entire screen into one big aquarium. The early version used parentheses to mimic moving water and o's to represent bubbles. Colleagues asked for copies, and soon Fries would see the screensaver running on computers throughout the office when he went home at night. "Anyway, that was kind of the start of my whole fish phase of my career, which I don't always talk about," he said.

The screensaver eventually became the official After Dark fish screensaver, synonymous with Windows screensavers in the '90s. Fries was hired full-time at Microsoft to work on Excel, and he decided to make the new screensaver while learning how to work in Windows. A co-worker on the Microsoft Word team asked him to create a Mac version, and that co-worker later wrote a fish editor that let users customize their fish in their tanks. The project was part of a broader underground culture at Microsoft at the time: "There was a whole kind of group of people at Microsoft at that time, like an underground group that made useless games, useless stuff. That group, which I was part of, called themselves bogus software."

The fish screensaver's origin story is a masterclass in how innovation often emerges from the margins. It wasn't a strategic initiative, a market analysis, or a product roadmap item. It was a small, playful request from an artist, fulfilled by a programmer who saw an opportunity to do something fun. The fact that it spread organically - colleagues asking for copies, then seeing it on screens across the office - is a reminder that adoption can be bottom-up, not top-down.

For executives, the story raises a provocative question: How many "useless" projects are being quietly killed in your organization? The "bogus software" group at Microsoft was an underground collective that made useless games and stuff, yet it produced one of the most recognizable digital artifacts of the decade. In today's ROI-obsessed corporate environment, such projects are often the first to be cut. But the fish screensaver suggests that low-stakes experimentation can yield outsized cultural and brand value.

The screensaver also illustrates the power of constraints and simplicity. The early version used parentheses for water and o's for bubbles - a minimal, almost absurdly simple visual language. Yet it captured something that resonated. The fish screensaver wasn't about technical sophistication; it was about charm, whimsy, and a universal association with dentist's offices. That insight is relevant for product leaders: sometimes the most beloved features are the ones that feel personal and slightly silly.

The story also highlights the importance of listening to small requests. The artist didn't ask for a full-screen screensaver; she asked for a little part of the screen with fish. Fries could have said no, or delivered a simple static image. Instead, he saw the potential for something bigger - "this crazy idea" - and pursued it. For leaders, the lesson is to give people room to take a small request and run with it, even if the initial ask seems trivial.

Ultimately, the fish screensaver is a case study in the value of play. It emerged from a culture that tolerated "useless" projects, and it became a cultural touchstone. As Fries put it, "Give me the fish, and I'll make them move." That attitude - curiosity, willingness to experiment, and a sense of fun - is exactly what many organizations try to engineer, but it often thrives best when it's allowed to emerge naturally. The next iconic product might be hiding in a dentist's office, waiting for someone to ask for a little part of the screen.