XOR

"There are no random events in XOR’s labyrinthine palace, and there is no premium on hand-eye coordination. You have all the time in the world to work out the precise nature of the hazards you encounter. Logical thinking, strategy, and tactical problem-solving are all part of the XOR experience."

XOR is a puzzle video game created by Astral Software and published by Logotron in 1987 for the Acorn Electron, Amiga, Amstrad CPC, Atari ST, BBC Micro, Commodore 64, and ZX Spectrum. This SAM Coupé port was created by Howard Price in 2012.

The objective of the game is to complete all 15 levels. As you go through the door of each level you will be given a letter, note down these letters. These letters will make up an encrypted clue to XOR's true nature. You cannot pass through the door until you have collected all of the masks at each level.

In your exploration of the mazes you will encounter falling fish, two kinds of force field, spring loaded chickens, fizzer bombs and pressure bombs, BMUS (Beam Me Up Scottie), dolls, doors, maps and masks which are not always quite what they seem.