Every tycoon game has a moment where you upgrade something and nothing gets better. Sometimes that is the player's mistake. Sometimes it is the game's. This devlog is about the second kind: a hidden problem in the check in area of Tiny Airport, how we found it, and how we fixed it.
A quick look at how Tiny Airport works
In Tiny Airport, every coin comes from passengers. They arrive, check in, go through security, maybe buy food, wait in the lounge and board a plane. You earn a fee at check in, money from the food court, and ticket money when each plane leaves.
Each area can slow everything else down. If check in is slow, the queue grows. If the queue gets too long, passengers give up and leave, and your airport's star rating drops. So upgrading check in desks is one of the first things players learn.
The problem: upgrades stopped working
We do not just play our prototypes by hand. We also run a simple computer simulation that plays the economy many times, fast, with different upgrade choices. It is like having a team of very patient robot testers.
The simulation showed something strange. No matter how much a player upgraded check in, the area never served more than about 2.5 passengers per second. More levels, faster staff, nothing helped past that point.
At a regional airport during rush hour, about 5.7 passengers per second arrive. That is more than twice what check in could handle. In the simulation, the queue filled up to its limit and stayed there. Passengers kept leaving, and the airport's rating fell from 3.6 stars to 1.2 stars in six minutes.
A real player in that spot would feel stuck and probably think the only way out was to pay. That is the opposite of what we want. Our rule is that paying can be a shortcut, but never the only way forward.
Finding the real cause
There were two hidden reasons.
First, the desks ran out. Check in stopped at 5 desks. After that, upgrades only made each agent a little faster.
Second, and much bigger, was walking time. When a desk became free, the next passenger in the queue had to walk from the queue to the desk. That walk could take up to 5 seconds. During those seconds the desk agent was doing nothing.
So the real limit was not how fast agents worked. It was how long the desks sat empty while passengers walked over. No speed upgrade could fix that, because the agents were already waiting most of the time.
The fix: three small changes
1. A "next in line" spot at every desk
Now each check in and security desk has a small waiting spot right next to it. While one passenger is being served, the next one is already walking to that spot. When the desk is free, they only take one short step. The walk now happens during service instead of after it.
This one change made the biggest difference.
2. Passengers hurry when called
When a passenger is called to a desk, they walk a bit more than twice as fast. It looks natural, because real travelers rush to the desk too, and it cuts the dead time even more.
3. One more desk, and a kinder rating
Check in can now grow to 6 desks, unlocked at level 21. We also changed how lost passengers affect your rating. Before, a burst of passengers leaving at the same moment could drop your rating many times in a second. Now it can drop at most once every 2 seconds, so one bad rush hour does not wreck an airport you spent an hour building.
The result
We ran the same simulations again. In the same scenarios that used to collapse, zero passengers were lost.
That does not mean check in is now too easy. Smaller airports still get busy at rush hour, and the queue still grows. The difference is that upgrades and the free Express Desks boost now actually solve it. Your choices matter again.
What we learned
- Simulate early. A human tester might have played for an hour and felt something was off without knowing why. The simulation gave us exact numbers in minutes.
- Watch the empty time. In games where little people walk around, the time spent walking can matter more than the time spent working.
- Upgrades must feel real. If a player buys an upgrade and nothing changes, they lose trust in the game. Every upgrade should make a visible difference.
- Fair first, shop second. We fixed the game itself. We did not add a paid item to cover up the problem.
If you play tycoon games, the lesson works for you too: when an upgrade does not help, look for the hidden bottleneck. We share more ideas like this in our tycoon game tips for beginners.
What is next for Tiny Airport
Tiny Airport is still in development. We built the prototype in a web browser to test the fun and the pacing. The real game will be built for Android, and it will go into a closed test on Google Play first.
Want to see if you can beat the rush hour? Join our testers and play it early.