Carcassonne

6-player expansion
18 Land tiles
  8 Gray followers for the 6th player
  6 Large followers
  6 point tiles - 50/100

River expansion
12 Landscape tiles with a river

Rules in Swedish (HTML)
Rules in Swedish (Large Word document)

Although the rules are simple and the drawing of tiles makes the game very luck-based, it's a really interesting game suited as a good "filler" in a gaming evening. The fact that it works well with two players, makes it even better. Probably a good family game, as you easily can help younger ones to build the landscape. "Spiele des Jahres" 2001 in Germany. If you are playing with children, you may just exclude the farmers from the scoring, which make the game much simpler.

The 6-player expansion add a player, but it also add a few new tiles, as a lake tile, where the robber scores 2 points for the road if it's completed, otherwise zero points! A cathedral tile for the city, which make the knight score 3 points per city segment if it's complete, otherwise zero!
Every player also get an extra large follower, which counts as two normal followers, when determining who should score.
As the new rules gives more points in the scoring, there's a scoring tile to indicate when a plyer has passed one or two laps on the scoring board.

The River expansion makes the game more spread out from the beginning.