As it says on the tin. I suggest a Modern category to cover 1950's onwards for games like 7TV, Survival Horror, Across a Dead Earth, Vietnam, Cold War, Superheroes (SuperSystem, Power Legion, Pulp City, Batman the miniature game...) etc. Maybe a Pulp section for games in the era of 1900-1950 that aren't involved with the WW's, like Pulp Alley, .45 Adventures, Strange Aeons etc.
"Who knows what Evil lurks in the hearts of men? Only The Shadow knows. Ha ha ha ha!!"