I managed to ease off and not end up with an early victory.
After my early warmongering I settled down a bit and got on with my usual “cover all bases” strategy, albeit with the Maoris you do a lot less improving of things.
Found all the other Civs and made friends and then allies with them, except for Wilhemina who was perma-enraged at my inability to send her a trade route due to being on the other side of the world from her. Eventually even sorted that out, but towards the end game the Diplomatic Victory looked a good prospect so I went for that.
Late game as the Maoris suddenly rocket-fuels your tourism so I had to give away a few works of art to prevent an early cultural win. Then on 9/10 Diplomatic points an era ends and immediately I’ve won for some reason. The information on Diplomatic Victory points seems really sketchy, I think it may have been because I’d earned a Golden Age, but I don’t know.
This game finally let me get to grips with the climate game mechanics. I was first to start belching CO2 I think because I railroaded my home cities, but switched to oil and then nuclear as fast as possible and soon after started powering my cities with solar and wind (the Civilopedia omits to mention that wind farms provide power) Then with the later techs I could decommission all my power stations and start carbon capturing. I think I’d become carbon neutral by the victory, but hadn’t mitigated all my damage at that point.
At the victory point I was allied with all remaining civs bar Roosevelt (who I’d annihilated in the ancient era) and Pericles who impressively remained equally pissed off at me for annexing Corinth during a war he started, for something like 3000 years!
I opted for the “just one more turn” and then things changed quite a bit for the world…