Getting a Science Victory in Civ 6
A Science Victory happens when you research the Orbital Flight civic, build a Space Flight mini-game at your capital, then launch enough spaceship components to beat everyone else's score. That's the basic definition. The actual execution is where it gets messy. I'm going to walk through how I approach it, what actually matters, and where people waste turns. This isn't from the manual. This is from having my games derailed by one bad policy card swap at turn 210.
Starting the Path Right
You need to be on a Science path from the start. Not just picking the right government, but setting up your empire so it never has to pivot. If you accidentally go on a Cultural or Religious track in the Ancient Era, you can recover. But it costs you roughly 30 to 50 turns and puts you at serious risk of being locked out of Civics by a rival who took the same branch. Here's what I look at immediately after settling my second city: is there a Campus adjacent to a River or Natural Wonder? That adjacency bonus is non-negotiable for most games. I've lost two straight games where I placed my second Campus next to a Desert with zero adjacency and spent 60 turns trying to compensate with Policy Cards and Governor points. It doesn't work. You'll fall behind. The math is just not there. Your first Government should be Classical Republic. It gives you a free Social Policy, a bonus to Campus adjacency research, and opens up the Political Philosophy tree where you pick up Academic Freedom. That policy doubles your Great Scientist output from tiles. I've seen people ignore it and wonder why they're churning out one Great Scientist every 120 turns while their opponent is getting one every 40.
The Mid-Game Engine
This is where most people slip up. They hit Monarch or Imperialism and think they're fine. The real gate is the Astrology civic and the earliest chance to build a Spaceport. I usually pivot to Fascism or Theocracy around Medieval Era depending on who's around me, because both governments give you a bonus slot for the early Space Race mini-game components. Skipping that is a casual 15 percent slowdown on your spaceship production. There's a thing I notice constantly: people stack Science policies too aggressively and then run into Culture lock. The game will refuse to let you purchase policies if your Culture output is too low, and you can't afford to slow down on Civics because you need Rationalism before Industrial Era. The workaround I use is keeping oneCulture-generating policy slot open until I hit Renaissance. A quick open borders trade or a single Theater Square usually covers it. It takes three turns of minor planning but saves about eight turns of being stuck later. Your District layout matters more than most players realize. Put your Campus in your second or third city, not your capital. The capital should be reserved for the Space Port final assembly once you unlock the mini-game. I learned this after a game where I built my campus in the capital, then couldn't fit the Space Port because my districts were blocking the required tiles. I spent 20 turns moving buildings around and still lost the victory by a narrow margin because I fell behind in ship component production.
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Common Pitfalls That Nobody Warns You About
The first is hot civilizations. If a rival picks up the same Science Civic path as you and gets an early adjacency bonus you don't have, they can pull ahead fast. The second is late-game policy card walls. You will hit a point where your Science output plateaus because you simply cannot generate enough Culture to unlock the final cards. I've solved this by trading for a Civics boost or picking a government change that aligns with what I need without burning Culture. The third pitfall is a completely overlooked issue: district adjacency stacking. If you have multiple Campuses, make sure each one has its own adjacent bonuses. Don't cluster them. Each Campus needs separate River or Mountain adjacency to be competitive. Stacking them on the same hill gives diminishing returns very quickly.
Winning With a Science Victory in Civ 6
Once you unlock the Space Flight mini-game at your capital, the game shifts into a different mode. You need four components: Propulsion, Computer, Rocket, and Crew Pod. Each component requires specific raw resources. Propulsion needs Titanium. Computer needs Aluminum. Rocket needs Fusion Reactor research and Uranium. Crew Pod needs nothing special beyond the research prerequisite. Build your Space Port district near open tiles. The mini-game requires a specific tile pattern and you can't place it next to existing districts. I usually construct the Space Port in my third city if my capital is too cramped, which is valid. Just note that the final assembly must happen in the city where you built the Space Port, so plan accordingly. Production is the bottleneck. I switch to Autocracy or Fascism around this point because of the extra production slot. It's not optional if you want to finish before turn 250 on standard speed. I've timed games where finishing at turn 248 beat a rival who finished at turn 251 by a factor of 300 victory points. The difference between winning and second place is often one turn.
Another detail people miss: Great Scientists are useful during the mini-game, but they're also useful for the late-game policies. I keep at least one Great Scientist available for academic projects during the mid-game instead of using all of them on the Space Flight mini-game. This usually trades five turns of ship progress for 15 turns of faster Science unlock. Net positive. If your production economy is weak, consider a trade route strategy. Assigning Trade Routes to your Space Port city can generate additional production through certain government policies and wonder effects. It's a small boost but it adds up over 20 turns.

Edge Cases I've Actually Run Into
In a recent game, I hit a wall where the AI had sealed off my only path to Titanium deposits. They'd taken the territory outright and I had no way to secure it without declaring war, which would ruin my Science track with diplomatic penalties. My workaround was simple: I traded my surplus Copper for their Titanium and signed a Research Agreement that doubled my Science for the duration. It cost me about 40 turns of potential diplomatic favor, but it kept me on track without losing my entire economy to a war I didn't need. Another edge case happened when a rival discovered America before me. This blocked my access to certain late-game Civics that require the American civilization's unique contributions. I ended up taking a different Civic path through The Communist Idea, which gave me comparable output but took two additional turns to unlock. It wasn't devastating, but it meant I lost the first-mover advantage. If you suspect this is coming, consider scouting earlier civilizations through Embassy or trade route placement rather than waiting for a random discovery. One final note: map size matters. On Continental and Small maps, Science Victories happen faster because campuses are closer together and resource clustering is tighter. On large maps, you may need to adjust your timing by 20 to 30 turns and plan your district layouts much earlier. I've seen players try to rush a Science Victory on large maps without adjusting their strategy and fail because their Campus adjacency bonuses were spread too thin across the map.