a set of modernized 3d pong style games combining the best features of squash and tennis. the game space is a cubic room. the back wall is defended by your opponent (the computer) and the front wall (behind you) is defended by you. the aim of the game is to make the ball hit the back wall of the game cube while preventing the ball from hitting the front wall of the game cube. there are three variants of the game: arcade (continuously increasing skill of your opponent), match (played according to the classic rules of tennis) and discovery (a pleasant way of opening beautiful pictures on each wall by making the ball strike them). each variant of the game has its own options and scoring rules. both you and your opponent strike the ball with rackets that can move on the planes of the front and back walls respectively. the ball's trajectory depends on the position and velocity of either racket at the moment it strikes the ball, i.e. the racket lets you skew and curve the shots. the ball may touch the side walls of the cube, which can change its trajectory. a thin white frame moves along the side walls with the ball so you can feel its position easily. there is no gravity in the game; all four sides (left, right, up and down) are equivalent. when your opponent misses the ball so it hits the back side of the cube outside your opponent's racket you win. if you miss the ball and it hits the front side of the cube you lose. you always start each game, i.e. the service is always yours. you can change the style of the cube sides' decoration, the ball size and the skill of your opponent.