All Window on America centers have a number of board games in their collections. Please see materials on cataloging games. Unfortunately, there are no formal guidelines out there since this is an emerging topic, but there are quite a few authoritative resources and examples from the U.S.:
1) Sample MARC record for cataloging games (http://sls.gvboces.org/gaming/node/495) from the School Library System of Genessee Valley Educational Partnership – a group that has been working on mapping board games to information literacy standards for K-12 students.
2) Presentation on cataloging games (http://www.slideshare.net/bcshipps/cataloging-games) from Katharine Posner and Bradley Shipps (academic librarians)
4) WorldCat has many entries for the subject “Board Games” including this one for a U.S.A. trivia game (http://www.worldcat.org/title/usa-trivia-a-fun-and-patriotic-board-game-questions-and-answers-about-the-united-states-of-america/oclc/23892059&referer=brief_results)
5) Cuyahoga County Public Library in Ohio has a toy collection (http://sciron.cuyahoga.lib.oh.us/search~S11/t?toy+collection&extended=0&searchscope=11) that includes a couple board games.
6) Boston Public Library’s collection of video games (http://bostonpl.bibliocommons.com/search?commit=Search&q=wii&search_category=keyword&search_scope=PAL&t=keyword&f_format=CDROM