Loved this game as a kid. It took hours to master. You had to choose your path through the maze whilst the floor moved below you. It was difficult navigating your way through the mazes cos the floors could crush you at any moment. The floor/walls increased speed with each level. Took me a few days to beat all the levels. Was a good break from the 2D levellers of it's time like Manic Miner and the rest.