https://forums.ageofempires.com/t/sacred-sites/173977/4   I think that is the idea that I liked the most about the design of AoE IV. " you capture them and if you keep all of them long enough you win".  In AoE IV mechanic clear, the developers have explicitly said that one victory condition they've experimented with is sacred site victory where a player must control all sacred sites to win. At various points in the fan event footage you can see control of the sacred