Look not only in the directories by category, but within each directory there
may be subdirectories for individual games if they contain several disk images.

action     - Action or arcade-style games (e.g. Stellar 7, Pacman)
adventure  - Text or graphic adventure games (e.g. Sherwood Forest)
board      - Board or card games (e.g. Sargon, Monopoly)
driving    - Driving-based games (e.g. Spy Hunter)
file_based - Disks with multiple games on them and a game selector of some kind
misc       - Everything else (e.g. Trivia, gameshows)
rpg        - Role playing games (e.g. Ultima)
simulation - Simulations of flight, situations, etc. (e.g. Skyfox, Tycoon)
sports     - Sports games (e.g. California Games, Karateka)
strategy   - Battle strategy games (e.g. Avalon Hill, SSI-type games)