Because of the more generous sizing these will fit both cards that are 56 X 87 MM,  57.5 X 88 MM, and 57 X 89 MM.  That means these will fit hundreds of games.  Games in the 56 X 87 MM size include Fluxx, Bang!, Bohnanza, Ca$h n' Gun$, Dalmuti, Dust, Empire Builder, Fallout, Fireball Island, Flash Point (the Fire Deck), Food Chain Magnate, Ghost Stories, Intrigue, Kill Doctor Lucky, Kingsburg, Munchkin, Mystery of the Abbey, Once Upon a Time, San Juan (2nd Ed), Shadows Over Camelot, The Battle of Five Armies, Ticket to Ride (all but USA mini cards), War of the Ring (1st Edition) and Yu-Gi-Oh CCG.  

So-called Chimera sized cards that fit these include games with cards 57.5 X 88 MM, like most FFG games. These include A Game of thrones, Arkham Horror, Battlestar Galactica, Chaos In The Old World, Cosmic Encounters, Descent, Doom Board Game, Galaxy Trucker, Game of Thrones CCG, Gears of War, Mansions of Madness, Mission: Red Planet, Runebound, Space Hulk, Star Wars: Imperial Assault, Starcraft The Board Game, Tide of Iron, Times Up and World of Warcraft: The Board Game and many more!