The Minotaur and the Labyrinth of Crete and portal 1 and 2
Cave Johnson, the president of aperture science facility, has his wife Caroline’s mind combined with that of Glados the machine meant to run the aperture science facility. Once she gains control and fills the facility with toxins that make everyone go insane and kill each other.Cave Johnson is unable to type in the command to kill her himself as it would kill what’s left of his wife, but turns the facility into an ever shifting maze so that Glados cannot escape and prevents the neurotoxins from reaching the test subjects in the hope that they can kill glados because he didn't have the guts to do it. You start with a companion cube to keep you from going insane. However the companion cube can only keep you sane for so long so you have to find new ones. Every year he releases a test subject (the player into the maze). The gameplay is that of a rogue like so every time you die you lose all your stuff and begin at the start of the procedurally generated maze as a new person. Or at certain points you can send your companion cubes back to the survivors base to save and spend on permanent upgrades, or you can spend them on cheaper upgrades that you would loose at the end of the run. Instead of a portal gun you have a magnetic gun that can push and pull smaller metal objects, and when pointed at larger metal objects can push or pull you towards the larger metal object.