Action games:
hunt - a multi-player multi-terminal game
worm - Play the growing worm game

Board games:
backgammon - the game of backgammon
gomoku - game of 5 in a row
monop - Monopoly game

Card games:
canfield - the solitaire card game canfield
cribbage - the card game cribbage
fish - play Go Fish
mille - play Mille Bornes

Formatting fun:
banner - print large banner on printer
bcd - reformat input as punch cards, paper tape or morse code
morse - reformat input as punch cards, paper tape or morse code
number - convert Arabic numerals to English
pig - eformatray inputway asway Igpay Atinlay
ppt - reformat input as punch cards, paper tape or morse code
random - random lines from a file or random numbers
rot13 - rot13 encrypt/decrypt

Puzzle/Quiz:
arithmetic - quiz on simple arithmetic
boggle - word search game
hangman - Computer version of the game hangman
robots - fight off villainous robots
snake - display chase game
tetris-bsd - the game of tetris
quiz - random knowledge tests
wump - hunt the wumpus in an underground cave

Role playing:
adventure - an exploration game
battlestar - a tropical adventure game
phantasia - an interterminal fantasy game

"Screensavers":
rain - animated raindrops display
worms - animate worms on a display terminal

Simulation games:
atc - air traffic controller game
sail - multi-user wooden ships and iron men
trek - trekkie game

Various calculations:
caesar - decrypt caesar cyphers
pom - display the phase of the moon
primes - generate primes

Other:
cfscores - show scores for canfield
huntd - hunt daemon, back-end for hunt game
snscore - show scores for snake
teachgammon - learn to play backgammon
wargames - shall we play a game?
wtf - translates acronyms for you