Portal is an exercise in what it’s like to eat the perfect slice of cake. Each layer of the cake is wonderfully moist, well crafted, and delectable. The frosting, or atmosphere, is amazingly engaging and lovable. Everything is just extremely well made and created, and then it’s all over. You wish there was more cake, but at the same time you’re glad there wasn’t too much cake, because you’ll cherish the cake that you did have all that more. Also the cake is a lie fabricated by a rogue supercomputer. I had to put one of those jokes somewhere!