OpenRA

Map creator Melons coded a very strong "impossible ultimate AI" and included it on his "Ultimate Chamber AI 0.97" Map.
Three experienced players did not manage to get three bots of that AI down so far. With only two bots we did it after approx an hour - with nukes on the center every 5 minutes in toxic setting.

Heres the map and replay:
https://www.swisstransfer.com/d/c2f9a59 ... 9adc7b41c4

If you manage to get three bots of this AI in "impossible" setting down, please upload the replay here. I am really curious

With toxic enabled it's possible to win in impossible mode on all the Ultimate AI maps, it's actually easier when toxic is enabled as the player has more of a chance, without toxic it is much more difficult.

The original and best suited map for the Ultimate AI is "Ultimate Castle AI 0.98" where you set the AI to the middle
https://resource.openra.net/maps/49942/

You can play on your own or up to 4 players and the enemies will ramp accordingly, so for example if it's just you on a 4 player map then it's 25% of the enemies rather than if there were 4 players, same for the chambers map.