Mutons and Ethereals have not yet appeared, but I am sure that they (at least Mutons) will not give me as much trouble. The reason for all is their tanks. Each such tank is two times stronger than Cyberdisk. Even before the first month ended, the terror mission with four tanks appeared! And since then they appear 2-3 times more often than all other races (while there were only Sectoids, Floaters and Snakemans and once Hybrids) put together. If you look at the numbers that are responsible for the frequency of occurrence of the MIB, then it is not clear to me why they should appear rarely. They appear in accordance with these numbers. I have already reduced them by 30% for my game, but in order to achieve a better balance, I think it is necessary to ensure that their tanks do not appear from the very beginning of the game. I see that the growth of the force of the race has already been implemented for MIB by creating two races: MIB and LATE_MIB, I just want to expand this mechanics, can you tell me how to add more types of races for MIB so that they work normally? I tried to figure it out, but I can't catch the logic. It is interesting to me to understand this, not only for balancing the MIBs, but also because it is an excellent mechanic.