Ur: 1830BC

The game is about diverting water from rivers into irrigation channels to supply sections of land with water. Players are land owners controlling kingdoms. Once a Kingdom has enough land purchased in it, it begins to build water infrastructure in the form of reservoirs and pumps. These structures draw the water away from the rivers into irrigation channels which are drawn straight on the board. The technology increases as the game progresses, making channel diggers obsolete and bringing out more efficient waterworks. When a section of land is irrigated, the owner earns a small degree income and the kingdom it's located in earns a much larger income, which can then be given to the landowners or kept in the Kingdom's coffers for future upgrades. The game ends when all the incoming water is used, forcing the southern tribes to invade, or a kingdom cannot fulfill its obligation to buy ditch-diggers and falls into revolution. The player with the largest personal holdings wins.