System Reference Document

set or subset of role-playing mechanics available under an open license

en-GB/ˈsɪstəm ˈɹɛfɹəns ˈdɒkjʊmɛnt/
en-US/ˈsɪstəm ˈɹɛfɹəns ˈdɑkjəˌmɛntv/

الفئات:

role-playing game systemgame rules