Crystals (1973): Buy or sell now
Who is this game suitable for?
Suitable for ages 0 and up. You can play with 2 to 3 players.
Playtime is roughly
0 - 0 Minutes.
For the pros among you, the following mechanics can be decisive: Paper-and-Pencil, Pattern Building und Square Grid
The game is published by: Dover Publications, Games and Puzzles (magazine) und Thomas Nelson & Sons Ltd
And was developed by: Eric Solomon
Alternative names
Crystals is played on a square grid - 21x21 is a suggested size. Players take turns marking squares with their symbol (e.g. X and O). These are called "atoms."
When a player can form a "crystal" they outline it, shade it, and score as many points as there are squares in it. A crystal is any shape that has at least four atoms of one player in it, none of another player, has reflective symmetry about both orthogonal and both diagonal axes, and obeys a few other rules.
The winner is the player with the most points once it is no longer possible to form new crystals.
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