Portal is a single-player first-person puzzle-platform video game developed によって Valve Corporation.
In Portal, the player controls the protagonist, Chell, from a first-person perspective as she is challenged to navigate through a series of rooms using the Aperture Science Handheld Portal Device (portal gun または ASHPD). The portal gun can create two distinct portal ends, オレンジ and blue. The portals create a visual and physical connection between two different locations in three-dimensional space. Neither end is specifically an entrance または exit; all objects that travel through one portal will exit through the other. An important aspect of the game's physics is momentum redirection. As moving objects pass through portals, they come through the exit portal at the same direction as the exit portal is facing and with the same speed with which they passed through the entrance portal.
This was a triumph. I'm making a note here: HUGE SUCCESS. It's hard to overstate my satisfaction. Aperture Science We do what we must because we can. For the good of all of us. Except the ones who are dead. But there's no sense crying over every mistake. あなた just keep on trying till あなた run out of cake. And the Science gets done. And あなた make a neat gun. For the people who are still alive. I'm not even angry. I'm being so sincere right now. Even though あなた broke my heart. And killed me. And tore me to pieces. And threw every piece into a fire. As they burned it hurt because I was so happy for you! Now these points of data make a beautiful line. And we're out of beta. We're releasing on time. So I'm GLaD. I got burned. Think of all the things we learned for the people who are still alive. Go ahead and leave me. I think I prefer to stay inside. Maybe you'll find someone else to help you. Maybe Black Mesa THAT WAS A JOKE. HAHA. FAT CHANCE. Anyway, this cake is great. It's so delicious and moist. Look at me still talking when there's Science to do. When I look out there, it makes me GLaD I'm not you. I've experiments to run. There is research to be done. On the people who are still alive. And believe me I am still alive. I'm doing Science and I'm still alive. I feel FANTASTIC and I'm still alive. While you're dying I'll be still alive. And when you're dead I will be still alive. STILL ALIVE