RECYCLE
RECYCLE is a game description language that allows for an algorithmic representation of common core mechanisms and elements of card games. RECYCLE stands for REcursive CYclic Card game LanguagE, referring to the primary feature of the language: the recursion of game stages containing cycles of player turns. The language resembles the LISP programming language, often having a large number of nested instructions that control the flow of the games.
Card game rules are often looser than board game rules, having more of a folk origin, and are easily altered with house rules and variations. Encoding a game in RECYCLE can be useful for illuminating the underlying formal structure of a game design, providing insight into avenues for targeted or large-scale refinement, and resolving potential ambiguities.
In RECYCLE, function names are all lowercase, data types are capitalized, and Strings are all caps.