The object of the game is to explore the ogre's lair, find the ogre and kill him. The lair consists of 17 levels. The ogre can be found in levels 16 and 17, but he can't be killed until the last one. To progress to the next level, find the exit, and move both characters to it.
This game can be played by one or two players. In one player mode, the player controls one character at a time, swapping between the two with the Return key. In two player mode, each player has their own set of keys for controlling their character. The keys are specified when the program is run.
The various objects found in the maze are as follows:
à Wall Blocks the player's path
à Trap door Exit to next level. Next level starts when both players have passed through
à Door Blocks the way until opened with the correct key
à Key Opens doors. Although they all look the same, each key opens a particular door
à Monster Drains the player's energy on contact
à Generator Generates new monsters
à Gun Turret One type fires randomly in all directions, while the other fires intelligently, but can only fire in four directions
à Block Like walls but can be blown up
à Food Increases the player's energy
à Gem Increases the player's score
à Cross Resurrects the other player
à Gate In two groups, blue and green, they block the player's path when in the wrong orientation
à Changer Rotates the corresponding set of gates when pressed
à Shield Increases the player's armour
à Fire Power Increases the player's firepower
à Fire Speed Increases the player's fire rate
à Hands Reach out of the wall and grab player, costing him a shield, fire power or fire speed
à Moving Wall Player loses energy if hit by wall
à Slide Moves player to end of slide
à Boulder Like walls, but the players can push them around
à Transporter Moves players instantly to another part of the level
à Potion Changes players energy level. Can be good or bad
à Sword Used to kill the ogre. Found on the last level
