XOR

XOR is a remake of an 8-bit game made by Astral Software back in 1987 for the BBC Micro, Amstrad CPC, ZX Spectrum etc. The object of the game is to pick up all the masks in the maze. That sounds easy but it can get devilishly difficult on later levels where you have things that can explode and turn the lights on and off. As you complete each level you are given a secret letter - once you have all 15 letters you can discover the hidden word - and become a member of the Order of XOR!