OpenFront Port vs Factory Timing: When v0.34.12's Faster Spawns Change Your First Investment

Direct answer: build the Port now, the Factory later — the extra gold is front-loaded, not a total bonus

The single most useful reframe of v0.34.12 is that the faster trade-ship and train spawns are not a bigger pie, they are an earlier slice. The release raised two spawn-saturation midpoints and left everything else untouched, so the total gold you will ever collect over a full game is roughly the same, but a meaningful share of it now arrives during the mid-game instead of the late game. That changes when you should make your first two capital investments, not whether. Concretely: buy your first Port early enough that you are already collecting the buff while the map is in the 150-to-400-trade-ship window, and hold the Factory until the late game, because the trade-ship buff peaks near 300 ships at roughly double the v0.34.11 rate while the train buff only reaches its modest peak near 700 units. If you take one action from this page, make it this: do not defer your first Port to the late game. The Port is the fast lever, it pays back in about two trade-ship arrivals, and it is the one that actually benefits from the v0.34.12 change. The Factory is the slow lever; it pays back over many train visits and its buff arrives later and weaker, so it stays a later, more conservative purchase. The table below maps the board signals to the decision, and every number that follows is pulled from the v0.34.12 source, not from memory or from a patch notes summary.

Board signal	What the v0.34.12 mechanics mean	Immediate decision
You have 150 to 350 trade ships on the map	Trade spawn rate is running 40% to 119% above v0.34.11	Buy your first Port now; you are inside the buff window
You have 500+ trade ships on the map	The trade buff has faded back to baseline	A Port still pays back in two arrivals; timing no longer matters as much
You have 500 to 800 train units	Train spawn rate is 20% to 37% above baseline	The Factory is becoming worth it, but the gold is small per visit
Your gold is below 125,000	Neither Port nor Factory is affordable yet	Do not starve your cities; save to the 125k line before buying either
A neighbor is nuke-capable	Ports and Factories sit on the map and can be hit	Front-load the Port (faster payback) before the Factory (slower payback)

What v0.34.12 actually changed: two midpoints, one direction

Precision matters here because the community keeps describing this patch as “more ships spawn” or “the economy got a buff,” and both of those are half-right in a way that will mislead your build order if you stop at the headline. The v0.34.12 source changes exactly two numbers in exactly two functions, and both changes push the spawn rate up in the mid-game. In tradeShipSaturation the damping term is 1 - sigmoid(numTradeShips, LN2/50, midpoint), and the midpoint moved from 230 in v0.34.11 to 330 in v0.34.12. In trainSaturation the damping term is 1 - sigmoid(numTrainUnits, LN2/100, midpoint), and that midpoint moved from 500 to 560. That is the entire diff that affects spawning. The boost term, the plateau term, the per-arrival gold formula, the Port cost, and the Factory cost are all byte-identical between the two tags, which is why the change is clean enough to reason about: there is no second variable to confuse the picture.

To see why moving the midpoint up raises the mid-game spawn rate, remember how the damping term behaves. The sigmoid is centered on the midpoint: to the left of it (fewer ships) it is small, so 1 - sigmoid is large, and to the right of it (more ships) it is large, so 1 - sigmoid is small. The saturation value is then boost * max(damping, plateau), and the spawn probability per tick is 1 / spawnRate where spawnRate = floor(100 * rejectionModifier / saturation). Lower saturation means lower spawnRate, and lower spawnRate means a higher per-tick chance of a spawn. So the mechanic runs the other way from what the word “saturation” suggests: the higher the damping value, the faster you spawn. Moving the midpoint from 230 to 330 means that at any given mid-game ship count you are now sitting further to the left of the curve, where damping is higher, so you spawn faster. At 300 ships, for example, the v0.34.11 damping term is already on the falling side of the 230 midpoint and is only about 0.28, while the v0.34.12 damping term is still on the high side of the new 330 midpoint at about 0.60. That single ratio is what produces the roughly 2.19x spawn rate that the next section tabulates. The same logic, weaker, applies to trains, whose midpoint moved only from 500 to 560, so the train buff is both smaller and later. The design intent, stated in the release, was to “increase trade ship and train spawn rate early-mid game,” and the source confirms that is exactly the shape of the change: the late-game plateau is untouched, so this is a front-load, not a windfall.

The spawn curve in numbers: where the extra gold lands

The most decision-relevant fact on this page is the shape of the buff across the fleet-size axis, so here is the measured ratio of v0.34.12 spawn probability to v0.34.11 spawn probability at representative fleet sizes. For trade ships the ratio is +23% at 150 ships, +42% at 200, +74% at 250, +119% at 300, +80% at 350, +17% at 400, and back to exactly 0% by 450 and at 500. For trains it is +20% at 500 units, +26% at 560, +37% at 700, and back to 0% by 810. Three things fall out of that shape and each one drives a different decision. First, the trade-ship buff is not a flat bonus, it is a hump centered on 300 ships, and it is large at its peak: at 300 ships your Port is spawning trade ships at more than double the v0.34.11 rate. That is the window where front-loading the Port pays the most. Second, the hump fades by 450 ships, which means that if you are already at 500 ships when you finally build your first Port, you have missed the buff entirely and the Port now behaves exactly like it did before v0.34.12. Third, the train buff is a much smaller, much later hump: it only becomes meaningful above 500 train units and peaks at a modest +37% near 700 units, so no decision about when to buy your first Factory can be driven by the spawn buff the way the Port decision can.

There is one important caveat about “extra gold” that players routinely get wrong, and it is the reason the release is careful to say the change is early-mid-game. The spawn buff increases the rate at which ships spawn, it does not increase the gold per arrival. A trade ship still pays roughly 82,000 to 100,000 gold depending on route distance, and a train still pays 5,000 to 35,000 per visit depending on who it is and how many cities it touches. So the total gold over a full game is roughly unchanged; what changed is the timing of when you collect it. The mid-game now hands you the same gold faster, which is why a Port you build at 200 ships recovers its 125,000 cost noticeably faster than the same Port built at 500 ships, even though both arrive at the same total. The practical consequence is that the optimal Port purchase moves earlier, into the window where the multiplier is +40% to +119%, and the optimal Factory purchase barely moves at all, because the train multiplier is under +40% for most of the game and the train gold per visit is small to begin with. The table below is the one to screenshot and keep open in a second tab while you play, because every later section just explains a row of it.

Fleet size (ships / units)	Trade spawn multiplier vs v0.34.11	Train spawn multiplier vs v0.34.11	Which lever is active
150 ships	+23%	baseline	Port (early)
200 ships	+42%	baseline	Port
250 ships	+74%	baseline	Port
300 ships	+119%	baseline	Port (peak)
400 ships	+17%	baseline	Port (fading)
500 units	baseline	+20%	Factory (early)
560 units	baseline	+26%	Factory
700 units	baseline	+37%	Factory (peak)
810+ units	baseline	baseline	Neither

Port: the fast lever that pays back in two arrivals

The Port is the structure that spawns the trade ships, and it costs 125,000 gold in v0.34.12, the same as the Factory. The reason the Port is the one you front-load is that its payback is fast and it is the one the v0.34.12 change actually accelerates. A single trade-ship arrival pays between roughly 82,000 gold on a short route and roughly 100,000 gold on a long one, computed by the formula 75,000 over 1 plus exp of minus 0.03 times distance minus the short-range debuff, plus 50 times the distance. That means two trade-ship arrivals cover the full 125,000 cost of the Port, and on a long route it is barely two. In v0.34.11 the same Port would have taken those same two arrivals too, but the time between arrivals was longer in the mid-game, because the spawn rate was lower. In v0.34.12, at the 300-ship peak, the arrivals come in at 2.19x the old rate, so the wall-clock time for the Port to pay back its cost drops to roughly 46% of what it was in v0.34.11. That is a huge swing for a 125,000-gold investment, and it is entirely a timing effect, not a total-income effect.

The practical rule that follows is about when, not how much. You should be able to afford the Port, and you should already have a trade route with at least one reachable destination, before you buy it, because a Port with nowhere to send ships earns nothing. The 125,000 line is the affordability gate, and the 150-to-350-ship window is the timing gate. If both are true at the same moment, buy the Port immediately; that is the moment where you are paying 125,000 for an asset that recovers its cost in a fraction of the old time. If you have the gold but you are already past 450 ships, the timing gate has closed and the Port still pays back in two arrivals but at the baseline rate, so it is a normal, not urgent, purchase. If you are inside the timing window but you do not yet have 125,000, the correct move is to save toward the Port, not to spend that gold on something slower, because the window will close as the ship count climbs and you cannot get the buff back. This is the single clearest “build order” change in v0.34.12: the Port moves from a mid-game luxury to a mid-game priority, and the reason is entirely the front-loaded spawn curve documented in the previous section. The port versus factory guide goes deeper on the structural choice between the two; this page owns the timing of when to make each one.

Factory: the slow lever that pays back late

The Factory costs the same 125,000 gold as the Port, but its payback is the opposite of the Port’s in every way that matters for timing, and that is why it is the lever you hold. Trains are free to spawn (the Train unit itself has a cost of zero; the Factory is what makes them), and each train pays gold per city it visits, with the amount depending on whose train it is. The v0.34.12 trainGold formula gives 10,000 gold when the train is your own, 25,000 when it is a teammate’s or a non-ally’s, and 35,000 when it is an ally’s, and then it subtracts 5,000 for every city the train has visited beyond the first nine, floored at 5,000. So a fresh train on a short route pays 10,000 to 35,000 per visit, and a worn train on a long route pays the 5,000 floor. To recover 125,000 you need somewhere between roughly four visits (at the 35,000 ally rate on a fresh route) and twenty-five visits (at the 5,000 floor on a long route). That is an order of magnitude more work per unit of gold than the Port, and most of the time it is at the slow end.

The v0.34.12 train spawn buff does not change that order of magnitude. It is smaller than the trade buff and it arrives later: it only becomes meaningful above 500 train units and peaks at +37% near 700 units. So the buff helps the Factory, but it helps it the way a 10% discount helps a 125,000 purchase you were going to make eventually anyway. It does not make the Factory the urgent purchase the way the trade buff makes the Port the urgent purchase. The reason the Factory stays a later lever is also structural: trains need a rail network to be useful, and the rail network needs to exist before the trains can visit cities. So the Factory’s real dependency is not just gold, it is a connected rail system that reaches a useful number of cities. The timing rule for the Factory is therefore: build it when you have 125,000, you have a connected rail network that reaches at least a handful of cities, and you are past the point where the Port is already paying back. In almost every game that is the late game. The train network guide covers the station range and rail-segment limits that decide whether your rail network is good enough to feed the Factory; this page owns the fact that the Factory should usually come after the Port, not instead of it.

Scenario A: mid-game FFA — you are at 300 trade ships

Let us put numbers on the decision. Imagine a Free For All match in v0.34.12, mid-game, with roughly 300 trade ships on the map. You have 125,000 gold in reserve, a safe trade route to a destination about 300 tiles away, and no neighbor currently holding more than 1.5 million gold, so the nuke threat is not yet a live problem. You are deciding between spending the 125,000 on your first Port now or saving it for a later Factory. The v0.34.12 trade spawn multiplier at 300 ships is +119%, meaning your Port is spawning trade ships at more than double the rate it would have in v0.34.11. At a 300-tile route, each arriving trade ship pays roughly 90,000 gold, so the Port recovers its 125,000 cost in about two arrivals. Because the arrivals are coming in at 2.19x the old rate, the wall-clock payback time is roughly 46% of what it was in v0.34.11, and in a typical mid-game pace that is the difference between the Port paying back before the late-game shuffle and paying back after it. The Factory, by contrast, would need a connected rail network and somewhere between four and twenty-five train visits to pay back, and the train spawn multiplier at this fleet size is still at baseline, so the Factory gets none of the current buff. The correct decision, on these numbers, is to buy the Port now and let it run. The concrete assumptions that make this work are the 125,000 reserve, the reachable 300-tile route, the 300-ship fleet size inside the buff window, and the absence of a nuke threat; if any of those breaks, the scenario flips, which is exactly what the next two sections explore.

The number to internalize from this scenario is the 46%. That is the payback-time compression the v0.34.12 buff gives you at the 300-ship peak for the Port, and it is the whole reason the Port is the front-loaded lever. If you are at 250 ships the multiplier is +74% and the payback compression is smaller; if you are at 350 it is +80% and still large; if you are at 400 it is +17% and mostly gone. So the scenario is robust across the 250-to-350 window, which is wide enough to be a real game, but it is not robust past 400 ships, which is the boundary you should be watching. The threat assessment guide tells you when a neighbor crosses the threshold that would make you want to spend the 125,000 on defense instead of the Port; this page owns the fact that, when the threat is not live, the Port is the correct use of that gold at 300 ships.

Scenario B: late-game 2v2 — you are at 800 train units

The second scenario is the one that keeps the Factory from being overbought, and it is a 2v2 match in v0.34.12, late game, with roughly 800 train units on the map. Your team has a connected rail network that reaches about 30 cities, you have 125,000 gold in reserve, and your team is in a holding pattern waiting for the endgame. You are deciding between spending the 125,000 on a second Factory now or holding it. The v0.34.12 train spawn multiplier at 800 units is at or just past baseline: the buff peaked at +37% near 700 units and has faded back to 0% by 810, so at 800 units you are getting little to none of the extra train spawns. The gold per train visit on a 30-city route is at the 5,000 floor, because 30 cities is far past the nine-city free threshold, so each visit pays 5,000. That means the second Factory needs twenty-five train visits to pay back its 125,000, and with the spawn buff mostly gone, those twenty-five visits arrive at roughly the v0.34.11 rate. In a holding-pattern late game, twenty-five slow visits is a long time to wait for a return, and it is a return you would get almost equally well without the v0.34.12 change. The correct decision, on these numbers, is to hold the gold or spend it on something that pays back faster, and to treat the second Factory as a late-game luxury rather than an urgent purchase. The concrete assumptions here are the 800-unit fleet size (past the train buff), the 30-city route (at the 5,000 floor), the 125,000 reserve, and the holding pattern; if the fleet were still at 600 units, the multiplier would be +37% and the Factory would be more attractive, which is the boundary the next section formalizes.

The contrast with Scenario A is the whole point. In Scenario A the Port is the urgent purchase because the trade buff is at its peak and the payback is in two arrivals. In Scenario B the Factory is not urgent because the train buff is gone and the payback is in twenty-five visits. The two scenarios are the same 125,000-gold question, but the answer flips on the fleet-size window, and that is the decision framework this page is built around. The winning and Overtime guide covers what to do with that held gold once the endgame threshold is approaching, because the Factory decision and the endgame decision are coupled; this page owns the fact that the Factory, specifically, should be the one you hold in a 2v2 late game at 800 train units.

Failure modes and counterplay: when front-loading backfires

The most common way this strategy goes wrong is treating the Port buff as a reason to buy the Port without the prerequisites, and the three failure modes are easy to spot and easy to avoid. The first is buying the Port before you have a reachable trade destination. A Port with nowhere to send ships earns zero gold, and the v0.34.12 buff multiplies zero, so you have spent 125,000 for nothing. The fix is the two-gate test from the Port section: you need the 125,000 reserve and you need at least one reachable destination, and only then do you buy. The second failure mode is buying the Port after the 450-ship window has closed, where the buff is gone and you are just paying the baseline rate; that is not a mistake so much as a missed opportunity, and the fix is to watch the fleet-size counter and buy inside the 150-to-400 window. The third failure mode is the one that actually loses games: spending the 125,000 on the Port while a neighbor is about to field a nuke, because the Port is a target on the map and the Port’s faster payback does not help you if the Port is destroyed. The fix is to run the threat check before the Port check; if the nuke threat is live, the 125,000 may belong to a defense instead of the Port, and the threat assessment guide is where that threshold lives.

The counterplay side is equally important, because the players you are against are making the same front-loading decision. If you have bought your Port early and are running the trade route hard during the 250-to-350 window, your opponent has two realistic answers. The first is to contest your trade route directly, with a warship screen or a transport capture, which turns your Port’s income into their income or into nothing; the trade versus piracy guide covers when contesting the route is worth it against defending it. The second is to ignore your Port and run their own, which is the correct answer when the map has room for both, and in that case the game becomes a contest of who reaches the 300-ship peak first and holds it. The strategic takeaway is that the v0.34.12 buff makes the mid-game trade race more valuable than it was, so the players who secure their Port and their route first in the 250-to-350 window have a real, if temporary, gold advantage, and the players who defer the Port to the late game miss it entirely. The buff is a window, not a gift, and the window is the 150-to-400-ship range.

Mode and map adjustments: when the timing shifts

The 150-to-400-ship window is the same in every mode, but the pace at which you cross it changes with the mode and the map, and that is the last adjustment you need to make before you trust the decision. In Free For All the ship count climbs steadily because every player is building Ports, so the window is wide and you have time to make the Port purchase inside it; the rule from Scenario A applies directly. In 2v2 the ship count climbs a little faster, because there are more players building more Ports, and the window is a little tighter, so the Port purchase should be one beat earlier than in FFA, not later. In the Doomsday Clock mode the territory-share waves compress the late game, which means the 450-ship boundary arrives sooner, and the Port purchase should be even earlier, because the window closes faster. The Doomsday Clock guide covers the exact territory-share waves that set that clock; this page only needs you to know that the clock makes the Port window shorter, not that it changes the buff.

The map changes the gold per arrival, which is the other half of the payback math. On a compact map the trade routes are short, so each trade ship pays closer to the 82,000 end of the range, and the Port pays back in just over two arrivals; on a large map the routes are long, so each trade ship pays closer to the 100,000 end, and the Port pays back in under two arrivals. The long-map Port is the faster payback, all else equal, which is a mild bonus to the front-loading strategy on big maps. The map strategy guide and the map size compact mode guide cover how the map shape affects route distance and therefore gold per arrival; this page owns the fact that the map changes the payback speed but not the timing window. The final adjustment is the rail network for the Factory, because on a compact map the Factory’s rail network reaches more cities per tile and pays back a little faster, while on a large map the rail network is longer and the Factory pays back slower; the train network guide covers the station range and segment limits that set that, and the standing conclusion is the same across every mode and map on this page: the Port is the front-loaded lever that v0.34.12 accelerates, the Factory is the slow lever that it barely touches, and the decision is to build the Port inside the 150-to-400-ship window and hold the Factory for the late game.