Tenis

## Description

_Tenis_ is a variant of a squash game despite its tennis referring name. The
goal of the game is to keep the ball on the screen as long as possible. The
player starts with five balls and gains one score point after each hit of the
ball with the racket. After each scored point the game speed increases
(starting with speed of 1 up to 9 which is maximum speed). At the end of the
game total time and best score is being displayed. Command keys are only arrow
keys which move racket left, right, up or down.