1977 · قواعد بديلة (قواعد أساسية متغيرة)

The Perrin Conventions

An alternative set of combat rules originally developed for the 1970s edition of Dungeons & Dragons. The conventions organize combat procedures and sequence of play, covering a more structured approach to resolving encounters. They later influenced the combat systems of early editions of RuneQuest and were revised through several published versions.