***WARNING***
Warzone has a major update on Aug. 9, 2021. Below is the changelog.
https://www.warzone.com/ChangeLog/5.14.0.htm

All information below might be inaccurate.



The upgrade cost of an army camp or a mine at level n + 1 is 1.8 times that at level n, when n is large enough.

For mines, this formula works when n >= 4.

Disclaimer: This formula is based on the upgrade costs of early army camps and mines that I gathered till the level Copper Creek Castle. The formula for later army camps, mine, or levels could be different.

Edited 8/10/2021 03:00:24

i dont unerstnd

@riskboy88: Can you be more specific?

What he's saying is this;

If a mine L4 upgrade costs 4M, L5 will cost 4M*1.8=7.2M.

A corollary of this formula is an upper bound of army camp levels. Assuming that the upgrade cost is stored in a 64-bit integer, then the levels of army camps are capped at 75. The actual max level may depend on the level and camp, and I would guess it is capped around 50.

I would be very surprised if anyone can get a max level army camp (not the supercamp), except on Tutorial.

Edit: For those who are interested, the max level of the regular army camp on Tutorial is 8. A new player can max it in 15 minutes.

Edited 7/26/2021 03:25:33

For science, just now I upgraded my starting army camp in Africa to lv25. It can still be upgraded.

A corollary of this formula is an upper bound of army camp levels. Assuming that the upgrade cost is stored in a 64-bit integer, then the levels of army camps are capped at 75. The actual max level may depend on the level and camp, and I would guess it is capped around 50.

Given that there are so many instances where you get .4 ores per second or .7 money per second, and such, I wouldn't be surprised if most of the values are actually floating-point units. Then, even knowing the bit-size wouldn't tell you much. They can store (almost) arbitrary large numbers. They just get more and more imprecise. But does it really matter whether a 1B upgrade costs 1B or 1B and 1??

I agree that there is probably some upper limit to army camps like there is one for mines. But I wouldn't derive this from a (arbitrary) technical assumption that I personally would want to challenge. In addition, integer are bad at multiplying with fractions like 1.8; another reason why floating-points are more likely.