We have quietly launched a solo game mode that gives players much more freedom to play the game their way. Thera are no fixed alliances and players have to form their own strategic liaisons with diplomacy.
As in alliance mode, each game starts with a five day peace but after the initial truce you are on your own and get hurled into a state of war with all other players. You can start signing peace treaties as soon as the truce ends.
If you choose to break a peace treaty and declare war again, diplomats will squabble for two days until the treaty is broken. Peace, on the other hand, is instantaneous when both parties agree.
Good luck, have fun and any feedback is greatly appreciated!
Ps. We recently published a huge image of the whole skills graph on our blog.