the points gained by killing aliens, scores are also awarded for the following: Humanoid falling back to the ground without dying: 250 points Catching a falling humanoid: 500, 1000, 1,500, and 2,000 points, depending on number of humanoids carried at the time. Returning a humanoid to the ground: 500 points Humanoid surviving the level: 100 points per humanoid for 1st wave, 200 per humanoid on 2nd wave up to a maximum of 500 points from 5th wave onwards End-of-wave humanoid bonus: If all enemies are destroyed and a humanoid is falling to the ground, the player receives a 2,000 point bonus if the ship is positioned at ground level directly under the humanoid so as to simultaneously catch the humanoid and place it back on the ground. If the player simply catches the humanoid in mid-air while above the ground, the wave ends with the player only receiving the 500 points for catching the humanoid. If you accumulate 999 ships in memory and get awarded your next ship, the game eliminates all your ships but the one you get awarded and the one you are playing with. By default, the player receives an extra life, smart bomb, and Inviso energy every 10,000 points. This amount can be overridden when the machine is in maintenance mode. As in Defender, at 9,990,000, the same bonuses are given per enemy destroyed. Controls The control system of Stargate expands on that of the Defender arcade game. It has a joystick to move up and down, a 'Reverse' button to toggle the player's horizontal direction, and a 'Thrust' button to move in that direction. There is also a Fire button for shooting, a button to activate a smart bomb, a button to turn on the Inviso cloaking device, and a hyperspace button which teleports the player to a random position in the level, at a risk of either exploding upon rematerialization, or materializing onto an enemy or enemy projectile. The Stargate A central feature of the gamefield is the Stargate itself, represented by a series of concentric rectangles. The operation of the Stargate depends on the current game conditions. If a Lander is in the process of abducting a Humanoid, flying into the Stargate will teleport the ship to where the Humanoid is under attack. If more than one Humanoid is being captured, the ship will be taken to the Lander that is closest to