Mozaic

Mozaic is a two-player abstract strategy board game, in which players try to score points by placing colored glass gemstones onto a game board to form square patterns. The game was designed by Martin H. Samuel. It was originally produced by Games Above Board, Sunnywood, Inc., of Hong Kong, then licensed and published through Sterling Games in 2003. Giseh Verlag launched the game in Germany at Essen Spiel in 2006. An Axiom-powered electronic version of Mozaic was programmed for the PC platform by Greg Schmidt in 2010.

Gameplay
The Mozaic game board has 64 tiles (8 x 8 squares) with a score-keeping "ladder" on either end. Players may choose between either amber or cobalt gems, which are picked to construct their point-scoring squares. Players take turns drawing gems from a bag, one at a time, and place them on any empty tile on the board. 4 points are scored when four gems of the same color are placed to form a square. Existing squares may be built upon and expanded, and several point-scoring combinations may be completed at one time with a single gem. During the game, players keep score on their side of the board with an extra gem of their color. The game is over when the last gemstone is placed, all the tiles are covered, and only the four exception gems remain in the bag. The player with the most points wins the game.

In addition to the cobalt and amber gems, Mozaic also offers four "exception" gemstones that, when drawn, allow for certain actions: Exception gemstones are always returned to the bag after a turn.
 * Rubies cause the player to skip their turn.
 * Sapphires allow the player to slide any gem diagonally to an empty adjacent tile.
 * Onyx allow the player to take two turns.
 * Diamonds allow the player to remove any gem from the board and replace it in the bag.