The game is played by two teams on an enclosed court with a goal at each end, similar to that of ice hockey or five-a-side football. The court contains fixed bounce domes that modify the trajectory and speed of the ball, as well as one hole in the middle at each side where upon entering the ball will appear at the opposite side, keeping its momentum. The layout of the domes on the court changes as the player faces a different team, up to a maximum of 10 variations. A player has control of only one outfield player on a team at any one time. The game may be played by one or two players; two player games are played competitively. Two game modes are supported: knockout and league. The game starts with the player selecting a captain among three available choices, each starting with significantly more points than the other two in one of three stats: stamina, power and skill. All the members in a team start the game with the same stats. During the actual game, as team members hit opponents, the opponent loses a part of his stamina; when stamina drops low enough, that individual player will move slower than the rest. The more powerful a team member is, the more damage he will deliver with a direct hit. Extra skill on the other hand promotes aggression from any team member controlled by the computer towards the opposite team, and improves chances of a successful hit. While in possession of the ball, the player can either press and immediately release the fire button to do a direct throw, or keep the button pressed to make the ball go higher. Players can then jump to try and catch it, but this makes them more vulnerable to being hit by the opposite team. As the game progresses, coins and several power ups appear randomly which can be collected. Power ups include making the ball become electrified, and make it teleport to your player. Coins can be traded at the end of each game for different bonuses, such as extra time or several enhancements for all members in the player's team, including a permanent increase to any of their stats. Computer controlled players can't collect coins, but the active player controlled by the computer can collect power ups. The team that has amassed the most goals at the end of the game is the winner.
Speedball was succeeded by . Speedball 2 had a greater and more lasting popularity than Speedball, and has been remade and republished a number of times.
