Twilight Imperium 3rd - Forever
Do you mean last play ever of TI3? It is time to move up to TI4; though seeing all the work you put in to get where you are with TI3, it's probably not all that appealing.
Nope just last play of 2017. There will be more TI3 this year for my group as we love all that I have done with the game and so far see no need to move forward.