Rhumb Line - puzzle game

Rhumb Line is a free online flash game of the category puzzle games.

The aim of this puzzle game is to make alignments of 4 stones in a straight line, in a curved line or in a winding line and to prevent of it your opponent.

Detailed instructions are displayed with the button "View rules". A radius returns 10 points, an arc 20 points and a spiral 30 points. The officer player, privilege of rank, begins to place a stone on the board, then it is the turn of the opponent.
Choose the difficulty level and then your color of stone or rank (between officer and sailor) if you play against the computer, or play at two players, one against the other. Move the stones using the mouse.

A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.