10Guess is a number guessing game for UNIX. The computer thinks of a number between 1 and 10 and it's up to the player to guess it.
source: /stacks.stanford.edu/file/druid:jz908ss3011/jz908ss3011_31_0000.pdf
source: /stacks.stanford.edu/file/druid:jz908ss3011/jz908ss3011_31_0000.pdf