Eufraat & Tigris

No. A leader must be placed on an empty land space adjacent to a temple, cannot be placed on a river space, and may not be placed so as to unite kingdoms (leaders can be repositioned or withdrawn under other rules) (page 6).

A catastrophe permanently blocks that space and may be placed on an empty space or on top of an existing tile (removing that tile), but it cannot be played on a tile bearing a treasure or monument or on a leader; if it removes the last temple adjacent to a leader, that leader is immediately withdrawn (page 7).

In a revolt the attacker and defender count temples adjacent to their conflicting leaders, then attacker then defender may each once commit extra temple tiles from hand; highest total wins and the defender wins ties; the loser withdraws his leader, the winner gains one amulet, and all committed temples are removed from the game (page 8).

For a war count each side’s supporters (connected tiles of the leader’s color) and then attacker then defender may commit matching-color tiles from hand; the higher total wins and the defender wins ties; the loser removes his leader and all supporters, and the victor gains one victory point for the withdrawn leader plus one for each supporter removed (committed tiles do not score) (pages 9–10).

If a tile completes a 2×2 square of like-colored tiles the active player may flip those four tiles facedown and place a monument (one monument color must match the facedown tiles); the facedown tiles still count as part of regions/kingdoms and link leaders but do not count as supporters in conflicts, and monuments cannot be destroyed (page 11).

The game ends when only one or two treasures remain or the bag is empty; players then allocate their treasures among the four spheres as they choose and compare players’ weakest sphere—whoever has the highest lowest-sphere wins, with ties decided by comparing next-lowest spheres (if all four spheres are equal, tied players share victory) (page 14).