In this arcade-quality action game you command the Nation's missile defense center to defend against a foreign missile attack. As missiles drop from the sky, you must shoot them while trying to protect your six cities and three missile bases. An automatically escalated skill level ensures that as you get better you get, the tougher Missile Defense gets!

You are a happy wanderer passing through a village in the land of Serenia when you notice a large crowd. Being a curious wanderer you saunter over to see what is going on. From the middle of the chaos you hear a bell ringing. As you get closer, you see the town cryer with a proclamation from the King of …

Softporn Adventure is a comedic, adult-oriented text adventure game produced for the Apple II in 1981. The game was created by Charles Benton and released by On-Line Systems, later renamed Sierra On-Line. Years later, Softporn Adventure inspired the Leisure Suit Larry series of adult-oriented videogames, and the first entry in that series, 1987's Leisure Suit Larry in the Land of …

You are a happy wanderer passing through a village in the land of Serenia when you notice a large crowd. Being a curious wanderer you saunter over to see what is going on. From the middle of the chaos you hear a bell ringing. As you get closer, you see the town cryer with a proclamation from the King of …

Threshold is a simple shoot'em up game. You are in control of a spaceship at the bottom of the screen and have to shoot several formations of enemies at the top of the screen. To make things more difficult you have limited time in form of a fuel tank which will get refilled after you cleared a number of waves. …

Sabotage is a 1981 computer game for the Apple II family of computers, written by Mark Allen and published by On-Line Systems. The player controls a gun turret at the bottom of the screen by either keyboard, paddle control, or a single axis of a joystick. The turret can swivel to cover a large area of the screen, but cannot …

Pegasus II is a Scramble variant. As such it is a side scrolling shoot 'em up where the player flies his ship over a mountainous terrain. On the ground there will be different enemy installations that the player can attempt to destroy by dropping bombs onto them. There are also rockets that launch from the ground and that the player …

As you near the front yard of the large, old victorian house, you feel an unexplainable tension. A small voice whispers inside your head. "Open the door and step inside. If you dare..." Upon entering, the door closes and locks behind you. Inside the house lies murder and mystery - it's up to you to solve them. Who is the …

Mouskattack is very similar to Pac-Man. Take the role of Larry Bain, a plumber working for Rodent Rooter attempting to get rid of all the huge rats in Rat Alley. The player is pursued by 4 rats in a maze and player must set mouse traps to get rid of them all as well as make sure the player traverses …

awbreaker is a Pac-Man clone programmed by John Harris and released in 1982 for the Atari 8-bit family by On-Line Systems. It was widely lauded by reviewers, and became a major seller. The story of both its creation and Harris's Atari 8-bit implementation of Frogger form a portion of Steven Levy's 1984 book, Hackers. In 1982 Atari, which licensed the …

Hi-Res Football is a computer adaptation of the American football sport. It features a single match between either two players or one player against the AI. Player controlled teams can be named while the AI team is simply called Apple. The game is real-time and all action is controlled with paddles. The playing field is seen from a top down …

Gobbler is a Pac-Man clone that is mostly identical to the original arcade game. The maze layout is slightly different but otherwise it offers the same gameplay. The gobbler has to clear the maze of all dots while avoiding the ghosts that chase him. Picking up a large dot energizes the gobbler for ten seconds, allowing him to go after …

Cranston Manor is the fourth game in On-Line System's Hi-Res Adventures series, along with Mystery House, The Wizard and the Princess, and Mission Asteroid. In the game, you must invade a mansion that was occupied by a late millionaire and steal the sixteen treasures that lie in it. You perform actions in the game by only typing a one- or …

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A l’aide du joystick, le joueur contrôle un vaisseau spatial – le Treshold – et est chargé de protéger les routes commerciales de la galaxie contre des attaques. Il affronte ainsi 24 types de vaisseaux spatiaux différents, réparti en six groupes de quatre types, chacun avec son propre schéma d’attaque. Ces ennemis sont ainsi plus ou moins rapides et peuvent …

Le joueur incarne un plombier qui intervient dans les égouts afin de réparer un réseau de tuyauterie endommagé par les rats. Les égouts forment un labyrinthe que le joueur doit garnir avec les pièces adaptées, tout en évitant les rats.