Indigo

On a turn, a player places a tile on any space on the game board, with the only restriction being that a player cannot create a route directly from one goal to another. Each tile has three route segments on it, connecting one pair of edges. If a player places a tile next to a gemstone, that gemstone "moves" as far as possible along the route so that all players can see where to place tiles to next move that gemstone. (Thus players avoid the mental gymnastics required in Metro and Linie 1 in which nothing moves until a route is complete.) When connecting to the central tile, the green gems move off first, with the indigo gem moving only with the sixth connection.

If a player places a tile so that one gem would run into another, both gems are removed from the game!

When a gem is moved to a goal owned by only one player, that player keeps the gem. If two players own the goal, then both players collect a gem of that color, taking the extra gem needed from the reserve. Once all the gems have been claimed, the game ends, with players earning 3 points for an indigo gem, 2 for green, and 1 for yellow. The player with the most points wins.