It is also very interesting that you can sometimes find Equilibrium by researching "counters" or using best response dynamic (https://en.wikipedia.org/wiki/Best_response)
If someone is interested in this topic becuase of esports commitment or just by curiosity there are some nice youtube videos and papers about using game theory in games:
https://www.youtube.com/watch?v=miu3ldl-nY4
https://digital.lib.washington.edu/researchworks/bitstream/h...
I don't want to nitpick the word meta, just maybe someone will find more info if he or she knew how to google it properly.
ps I created account specially to write this comment :)