Basket Master was originally made for Amstrad. Later on it has been converted to DOS, which resulted in this nice game.
As you can see in the name of Basket Master, this game is about basketball. You're playing one on one, against the computer or against a friend.
The gameplay is very difficult. To control the basket ball player in a one player game, use S and D to walk left and right, and Q and A to walk up and down you screen (I'm using a qwerty keyboard, so the controls might be a bit different at yours).