Tigris and Euphrates

Tigris and Euphrates () is a tabletop eurogame designed by Reiner Knizia and first published in 1997 by Hans im Glück. Before its publication, it was highly anticipated by German gamers hearing rumors of a "gamer's game" designed by Knizia. "Tigris and Euphrates" won first prize in the 1998 Deutscher Spielepreis. A card game version was released in 2005.
The game is set as a clash between neighboring dynasties at the dawn of civilization and is named after the rivers Tigris and Euphrates, in the region now called the Middle East. The rivers together formed natural borders for an area which harboured several grand ancient civilizations, including Sumer, Babylonia, and Assyria. The Greeks called this area Mesopotamia, which literally means "between the rivers".
Gameplay.
The game can be played by two, three, or four people. Play offers both tactical and strategic objectives. As with many games, short-term objectives gain prominence when more players participate, as players have fewer chances to follow up on previous moves. Luck plays a role, as players draw tiles from a bag, but it is seldom decisive. Players may selectively discard and redraw their tiles at the cost of one "action point", of which each player has two per turn. The game does not use dice.
The board is a map of the two rivers, marked with a square grid. There are four types of tiles with corresponding leaders: temples and priests (red), farms and farmers (blue), markets and merchants (green), and settlements and kings (black). The game starts with ten isolated temple tiles already placed on the board. Players play tiles and leaders onto the board, creating and expanding regions and kingdoms. Monuments may be built on the board when four tiles of the same color are played into a square pattern.
Two leaders of the same type cannot coexist in the same kingdom. Internal conflicts are caused by players adding a second leader of a type to a kingdom. External conflicts are caused by players playing tiles to merge two existing kingdoms.
During the game, players collect points in each of the four colors as a result of playing tiles, resolving conflicts and controlling monuments. After the final round each player sorts his or her points by color, including any "treasures" which they have acquired, which count as any color the player wishes. In order to limit specialization the player with the most points in their weakest category wins.
For example:
Players must balance their scoring and avoid overspecializing. Knizia later used this mechanism as the basis for Ingenious.
Reception.
Thomas Lehmann comments: "If you are looking for a tactically rich, intense strategy game with lots of conflict (unusual in a German game), try "Tigris & Euphrates" and see why so many players consider this game Reiner Knizia's masterpiece."