Before Portal 2 Portal was the spiritual successor of a Digipen graduate’s project Narbacular Drop. A game featuring Princess NoKnees a young girl who is incapable of jumping trying to escape an elaborate dungeon with the help of dimensional doors to navigate through the dungeon’s gauntlets and mazes. Once Valve was shown the footage of the game they hired the team making Narbacular Drop to make for them a game of its like. With some major aesthetic changes tweaking and help from the half-life
including a portal gun. Chell spends the majority of the plot fighting against the antagonist Glados, an evil artificial intelligence controlling the tests at Aperture science. It is implied during the plot of Portal that her parents are Cave Johnson, the founder of Aperture Science, and Caroline, Cave’s assistant whose consciousness became Glados. On bring your daughter to work day, a newly created Glados killed most of the employees of Aperture Science, including Cave and Caroline, sparing only few
couldn't stand right to fly the TARDIS. The Doctor had no choice, but to stay in Aperture. Time passed and The Doctor ended up becoming an Aperture employee. Aperture progressed fast with The Doctors help. They had invented a Hand Held Portal Device, GLaDOS, 1500 Megawatt Super-Colliding Super Buttons, Turrets, Weighted Storage Cubes, Weighted Companion Cubes, Discouragement Redirection Cubes, Thermal Discouragement Beams, Excursion Funnels, Panels, Crushers, Aerial Faith Plates, Repulsion Gel, Propulsion