The classic stone paper scissor game vs the CPU in DOS.

Intially each player is provided 50$ sum of money. For each strike, the player and cpu contribute 5$ each. A strike is played by pressing the following keys:

1 - Stone
2 - Paper
3 - Scissor

The winner of the strike gets 10$. In case it is a draw, both get nothing. The game continues until player or the cpu has no money. Oh, and these are the rules:

Stone beats Scissor
Paper beats Stone
Scissor beats Paper