query: SELECT ?role_playing_game ?role_playing_gameLabel ?RPGGeek_ID WHERE {
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
    ?role_playing_game wdt:P31 wd:Q1643932.
    OPTIONAL { ?role_playing_game wdt:P7226 ?RPGGeek_ID. }
  }