The Situation
In the late 2000s, a small group of people who had already built and sold a company called Flickr decided to do something genuinely hard: build an online game. The company was Tiny Speck, the game was called Glitch, and the ambition was enormous. Glitch was a whimsical, browser-based, multiplayer world with no combat and no winning, built around exploration, collaboration, and a strange sense of humour. It was the kind of product people fall in love with. It was also the kind of product that is brutally difficult to turn into a business.
Glitch did not work as a commercial venture. It attracted a devoted niche but never the scale a game like that needs to survive. The team eventually made the painful decision to shut it down. By any conventional measure, this was a failure: years of work, a passionate team, real funding, and a product that did not reach sustainability. What makes this story worth studying is not the failure itself. It is what the team noticed in the wreckage, and the discipline with which they acted on it. The internal tool they had built simply to make working together bearable across a distributed team turned out to be the actual product. That tool became Slack.
The Hidden Tool Inside the Failing Game
Building Glitch required a distributed team to coordinate constantly. Email was hopeless for the volume and pace of communication they needed. So, as engineering teams have done for decades, they wired up a chat system for themselves. But they did not stop at raw chat. Over time they layered on the things that made their own work easier: searchable history, so a decision made on Tuesday could be found on Friday; integrations that piped information from their other tools into the conversation; the ability to organise discussion into channels rather than one undifferentiated stream.
None of this was the product. It was scaffolding. It existed only to help them ship a game. And yet, when the team stepped back from the rubble of Glitch and asked what they actually had, the honest answer was that the most valuable thing they had built was not the game at all. It was the way they communicated while building it. They had been living inside a piece of software that solved a real, painful, universal problem, and they had been too focused on the game to see it as a product.
The Decision: Kill the Game, Ship the Byproduct
Here is where most teams would have failed even after having the same insight. Recognising that your internal chat tool is interesting is easy. Choosing to wind down the thing you spent years building, the thing you loved, the thing you raised money to create, and to bet everything on a side tool that was never meant to be sold, is hard. It requires letting go of sunk cost, of identity, and of the story you told investors. The Tiny Speck team made that decision. They committed to turning their internal tool into a commercial product.
This is the central product lesson of the entire case study, and it is worth stating plainly. The team's willingness to abandon the obvious product in favour of the non-obvious one was the decision that created the company. Everything else, however well executed, would have been worthless without it. A PM watching this should notice that the hard part was not technical. It was psychological and strategic: the discipline to value evidence of usefulness over attachment to the original plan.
Why the Byproduct Was Better Than the Plan
The chat tool had an advantage the game never had. It had already been validated by the most demanding users imaginable: the team itself, using it for real work, every day, for years. Glitch was a bet on whether strangers would fall in love with a quirky world. The chat tool was not a bet at all in the same sense. The team already knew, from lived experience, that it solved a problem. The product had been dogfooded into existence before anyone tried to sell it. That is a fundamentally stronger starting position than a hypothesis on a whiteboard.
What They Actually Did
Turning an internal tool into a sellable product is not a rename and a logo. The team did several deliberate things that turned a working-but-rough internal utility into something a stranger could adopt without a guided tour. These choices are the transferable craft of the story.
- They obsessed over onboarding. An internal tool can assume its users already understand its conventions. A commercial product cannot. The team treated the first ten minutes of a new team's experience as the most important part of the product, because a tool like this is worthless to one person and only valuable once a group is using it together.
- They made the "aha" moment about connected tools. The magic was not chat. Chat existed everywhere. The magic was that messages, files, search, and notifications from other systems all lived in one searchable place. They leaned into integrations early, so that the product felt like a hub rather than just another messaging app.
- They designed for the team, not the individual. Adoption happened in pods. One person tried it, pulled in a few colleagues, and the value compounded as the group joined. The product was built so that this group dynamic was easy to start and hard to leave once a team's history lived inside it.
- They sweated the texture. The tone of voice, the small moments of personality, the speed and polish, all of it carried over from a team that had built consumer-grade products before. They refused to ship something that merely functioned.
Why It Worked
Slack grew through a motion that is now well understood but was sharply executed here: bottoms-up adoption. The product did not enter companies through a procurement process and an executive signature. It entered through a single team that started using it because it made their work better. That team's enthusiasm spread to adjacent teams. By the time anyone in management noticed, the tool was already embedded in how people worked, and the conversation was no longer "should we try this" but "we already depend on this, let us make it official."
This worked for a specific, structural reason. The pain Slack addressed was felt most acutely by the people doing the work, not by the people approving budgets. When you build for the person who feels the pain and make it trivial for them to start, you bypass the slowest and most skeptical part of an organisation. The product sells itself sideways and upward rather than being sold from the top down. Bottoms-up adoption is not a growth hack you sprinkle on later. It is a consequence of building something individuals genuinely want and removing the friction that would stop them from starting.
The Compounding Lock-In of Shared History
There was another quiet reason it worked. As a team used the product, it accumulated history: decisions, files, conversations, context. That archive became more valuable over time and more painful to abandon. The product got stickier the longer you used it, not because of contractual lock-in but because the team's memory now lived inside it. Good products often have this property, where ordinary use creates an asset that makes leaving costly. A PM should always ask whether normal usage of their product builds something the user would hate to lose.
What Almost Went Wrong
It is tempting to tell this story as inevitable, but it was not. The most likely outcome of the Glitch failure was simply a failure. Most teams that shut down a years-long project do not walk away with a second company. Several things could easily have gone differently, and naming them keeps the lessons honest.
The team could have been too attached to the game and spent its remaining runway trying to save it, burning the very resources that made the pivot possible. They could have noticed the chat tool, agreed it was interesting, and filed it away as a "someday" idea rather than acting decisively. They could have shipped the internal tool as-is, rough edges and all, assuming that because it worked for them it would work for strangers, and watched new users bounce off an experience that quietly assumed too much knowledge. Each of these is a realistic, common failure mode. Avoiding them required judgement, not luck.
The Lessons for Product Managers
Strip away the specifics and several durable lessons remain. The first is about dogfooding. The chat tool was strong precisely because the people who built it were also its most demanding users. When you use your own product for real work, you discover its failures faster and more honestly than any usability study. The Slack team did not have to imagine whether their tool was useful. They had years of lived proof.
The second is about finding the product inside the byproduct. The thing you set out to build and the thing the market actually wants are not always the same, and the gap is often hiding in your own tooling, your own internal hacks, the workarounds you built because nothing else solved your problem. A good PM keeps asking: what have we built for ourselves that others would pay for? What is the most useful thing we made that we are currently treating as scaffolding?
The third is about the courage of the cut. None of this happens if the team clings to the original plan. Evidence of usefulness has to outrank attachment to the vision. The fourth is about adoption mechanics: building for the person who feels the pain, removing the friction to starting, and letting value spread sideways through an organisation rather than waiting for permission from the top.
A Final Word
The Slack story is often told as a fairy tale, a failed game that magically became a giant. That framing misses the actual work. The team did not stumble into success. They built something real for themselves, paid honest attention to what was genuinely valuable, found the courage to abandon what they loved, and then did the hard, unglamorous work of turning an internal utility into a product a stranger could adopt and a team could not leave. The lesson is not that failure leads to fortune. The lesson is that disciplined attention to what is actually useful, combined with the willingness to act on it, is what turns a dead end into a beginning.
Key Takeaways
- Dogfood relentlessly. The strongest products are often the ones the team itself depends on daily, because real use surfaces real problems faster than any research.
- Look for the product in the byproduct. The most valuable thing you have built may be the tool you made for yourselves, currently hiding in plain sight as scaffolding.
- Let evidence outrank attachment. Be willing to wind down the thing you set out to build when the data points clearly to something else.
- Treat onboarding as the product. For collaboration tools especially, the first ten minutes and the ease of bringing in others determine whether anything else matters.
- Build for the person who feels the pain. Bottoms-up adoption is not a hack; it is the natural result of solving a real problem for individuals and removing the friction to start.