Ethereal's wishlist

[Meridian]

As a matter of fact, I would like to know exactly the mission generation periods, the number of possible and simultaneously current missions. And how does it depend on the level of difficulty?

There are no periods for retaliation mission generation.

Number of possible and simultaneous retaliation missions is equal to the number of regions, since you can have only one retaliation mission per region.

Difficulty determines the chance of retaliation mission spawning when you shoot down a UFO, starting at 4% for beginner up to 20% for superhuman (in your mod 24% for superhuman based on difficulty coefficients).

[Ethereal]

Retaliation has nothing to do with it. I am interested in ordinary missions.

[Meridian]

Then fu*king learn to ask fu*king questions!
My patience is big, but not unlimited.

For ordinary missions I have already answered the question:
There are no hardcoded generation periods, no hardcoded number of possible missions and no hardcoded number of simultaneous missions. There is also nothing hardcoded based on difficulty. There is NOTHING hardcoded in the generation of ordinary missions whatsoever. The mission generation is completely in the hands of the modder using the available features of the mission script.

That's all I have to say.