Masters of Doom tells the story of John Carmack and John Romero, founders of id Software. These two developers transformed their gaming passion into a millionaire enterprise during the 1980s and 1990s, creating Wolfenstein 3D, Doom, and Quake — games that didn't just entertain millions but invented entirely new genres and technologies.
If you haven't read this book yet, stop reading this article and go buy it. It's one of the best startup stories ever told, even though the protagonists would never have called themselves startup founders.
Here's what they got right — and what every builder can learn from them.
Have a Goal
The id Software founders maintained a clear objective: create excellent games. Not "build a company." Not "get funded." Not "disrupt the industry." Just: make the best games anyone has ever played.
Genuine goal-setting — not performative posturing — is essential for any journey. Too many founders today set goals that are really just vanity metrics in disguise. Revenue targets, user counts, fundraising milestones. These are outcomes, not goals.
Carmack and Romero didn't care about any of that. They cared about pushing the boundaries of what a computer could render on screen. The money followed because the work was genuinely excellent. The lesson is clear: if your goal is authentic and you pursue it with intensity, the market rewards tend to take care of themselves.
The hard part is honesty. Most people lie to themselves about what they actually want. They say they want to build something great, but what they really want is the status that comes with being a founder. Carmack and Romero were immune to this because they were genuinely obsessed with the craft.
Innovate
Rather than replicating existing approaches, successful entrepreneurs identify industry gaps and create solutions. id Software recognized the personal computer games niche and pioneered 3D gaming technology, fundamentally advancing the field.
When Carmack built the first smooth-scrolling engine for PC, nobody asked for it. The industry consensus was that PCs couldn't do what Nintendo did. He proved them wrong by solving the technical problem in a way nobody had thought of before.
Then he did it again with 3D rendering. And again with networked multiplayer. Each time, the innovation wasn't incremental — it was a fundamental leap that redefined what was possible.
This is the difference between innovation and iteration. Iteration is making something 10% better. Innovation is making something possible that was previously impossible. Both have value, but only innovation creates new markets and lasting competitive advantages.
The key insight from id Software's story is that innovation usually comes from deep technical understanding combined with creative ambition. Carmack could innovate because he understood the hardware at a level that most developers didn't bother with. He read academic papers about rendering algorithms and figured out how to make them run on consumer hardware.
If you want to innovate, go deeper than everyone else. Understand the fundamentals that others take for granted.
Commit Yourself
Success demands dedication. When the founders focused intently on quality products, they achieved excellence. When focus wavered, they wasted resources.
Carmack was famous for his work ethic. He would sit at his desk for 16 hours straight, completely absorbed in solving a rendering problem. Not because someone told him to, but because the problem fascinated him and he couldn't stop until he cracked it.
This level of commitment isn't sustainable for everyone, and it shouldn't be romanticized as the only way to succeed. But the underlying principle is universal: the things you commit to deeply are the things that produce outsized results. Half-hearted effort produces half-hearted outcomes.
The id Software story also shows the cost of losing commitment. When Romero became more interested in being a celebrity than making games, the quality of his work declined. When the two founders eventually split, neither produced work as groundbreaking as what they'd built together. The commitment had to be total and shared.
The Partnership Dynamic
One of the most fascinating aspects of Masters of Doom is the Carmack-Romero partnership. Carmack was the engine builder — methodical, introverted, focused on pushing technical boundaries. Romero was the designer and showman — creative, extroverted, focused on player experience and culture.
Together, they were unstoppable. Carmack built tools that nobody else could build, and Romero used those tools to create experiences that nobody else could imagine. The tension between their approaches — Carmack's discipline and Romero's creativity — produced something greater than either could achieve alone.
Every great company has a version of this dynamic. The builder and the storyteller. The engineer and the designer. The introvert and the extrovert. Finding your complementary partner is one of the highest-leverage things you can do as a founder.
The Takeaway
Understand what you want to do, do it the hard way by innovating and making an impact, do not stop and keep going with unwavering dedication.
The Masters of Doom story resonates because it's simple. Two guys who loved making games decided to become the best in the world at it. They succeeded not through luck or connections or fundraising, but through relentless commitment to their craft.
That template works in any era, in any industry. Find something you care about deeply. Go deeper than anyone else. Build something that moves the field forward. And don't stop until you've made your dent.
Originally published on Medium.