My game's AI integration is wayyyy too complex to be done in just 3 weeks. So unfortunately I can't participate in this jam, I really wanted to because my idea is really unique and awesome(if you are wondering, it's like a diplomatic letter written to other leaders or they send you a diplomatic letter.. Advisors talking to you like an actual political advisor, etc. which I truly believe could change the Map oriented Grand Strategy games). Is there any other months or maybe even some months next year I could participate or is this just a one-off event? How can I know?

yes, this will be a recurring game jam, so a new one will be announced in a few months.

if you join discord you can see the jam updates when it is announced

Yes! Join the Discord! You can start using the Player2 API right now!!!

The idea i have for this game jam is kinda similar, but a much smaller scale than what you're working on it sounds (gonna attempt in 3 weeks).  If you're open to taking a break for a few weeks to do a related side-quest for this jam, hit me up.  My discord username is: a2345sooted_21992