US patent class 273 or 463 — Amusement devices: games
US patent class 273: amusement devices: games [detailed definition]
US patent class 463: amusement devices: games [detailed definition]
Patent class 273 is being reclassified into 463 and 473 (games using tangible projectiles).
Topics include: ball games and other projectiles, board games, card games, chance devices, puzzles, games of skill, computer and video games, …