Lemma
Lemma was chosen by Games as one of the best games of the year 1987. Here's their write-up from the October-November 1987 issue in the pure strategy category:
LEMMA (1 to 6 players)
Highly original, Lemma is a mind-stretching "meta-game" about creating a game. Without violating some basic ground rules, each player in turn must both perform an "action" on the board (such as placing or moving a piece) and introduce a new rule to the game (which must be illustrated by the action taken). All actions and rules must be consistent with previous rules, and play proceeds until someone cannot find a way to continue. As with other games by Kadon, the rulebook also includes numerous puzzles that make use of the game equipment.
