At the high school level, it's anything involving any sort of cards, since it could be deemed "gambling." Our school also has Bess as its opressive web filtering service, so anything on the web that could be deemed remotely related to games is blocked. I could see the argument for something like Planetquake or the likes, since games like that are violent and blah blah school appropriateness, but even EoFF is blocked under the term of games.