CirKis

CirKis is a piece placing board game, for two to four players, invented by Phil E. Orbanes and developed by Winning Moves Games USA in 1977. However, the game is no longer in production. It received the French Game of the Year Award for 2009. The game is based on Penrose tiling.
Gameplay.
The game is played on a decagonal board, which contains the scoring pegs, and has a storage well for each of the four coloured sets of pieces. There are 80 total pieces divided into four identical sets of purple, red, green and yellow.
The first player must place a piece inside, or touching, the center circle. Then, every piece played must touch the piece previously placed on the board. So, on a player's turn, they must place a piece so it touches the piece that was just played by the previous player.
Players score points by completing circles and stars. If a player has majority of the five segments in the circle or star, they scores 10 points. A five point bonus is awarded to the player who completes the shape if they do not have majority in the shape.
A player can earn a free turn – play anywhere, in three ways: 