Story/ko

포털 시리즈를 플레이하는 동안 첼의 역할을 맏게 됩니다. 첼은 애퍼처 사이언스에 '갇힌' 젊은 여성입니다. 첼은 GLaDOS (글라도스)라고 불리는 인공지능에 의해 만들어진 실험실에서 실험을 수행하게 됩니다. 게임의 초기에는, 휴대용 포털 장치(포털 건)를 이용해 실험을 수행합니다. 이 포털 장치는 첼로 하여금 쉽게 접근할 수 없는 장소에 가게 해주는, 터널과 같은 역활을 합니다.

포털
포털 은 두 개의 단계를 가지고 있습니다. 두 개의 단계는 실험실과 탈출입니다.

단계 1: 실험실들
게임은 첼이 안정실에서 깨어나며 시작하고, 글라도스의 목소리가 브리핑을 해 주고, 포털이 열리며 나가게 됩니다. 플레이어는 잠시 후, 휴대용 포털 장치를 얻게 되며 본격적인 테스트에 들어갑니다. 테스트를 치루면서 글라도스이 의도는 분명해집니다. 실험이 끝나고 나면 케이크를 준다고 동기부여를 한 다음, 점점 어려워지는 테스트를 치룹니다. 테스트의 끝 부분에서, 첼은 아주 어려운 테스트를 풀어야 합니다.{{Spoiler|첼이 실험을 다 마치고 나자, 글라도스는 첼을 소각로로 보내 죽이려 합니다. 빠른 생각을 통해, 첼은 휴대용 포털 장치를 이용해 탈출한 다음, 자신만의 방법을 만들어 탈출하려고 합니다.

포털: Still Alive
포털: Still Alive는 Xbox 360용 '포털'입니다. 새로운 고급 실험실과 추가 실험실이 포함되어 있으며, 포털: 플래시 버전에서 영감을 얻었다고 합니다. 추가적인 이야기가 추가되었습니다.

Portal 2: Lab Rat
The Lab Rat comic bridges the gap between Portal and Portal 2, which introduces us to Doug Rattmann, a scientist at Aperture Science who survived the Neurotoxin after GLaDOS' first activation at the Bring Your Daughter to Work Day, which made her self-aware and initiated a lockdown on the facility, and killed most of the scientists with neurotoxin.

Part 1
Part 1 follows Doug Rattmann as he is tracking Chell through the Enrichment Center. He is having a monologue about reality and how the mind sees it, and is shown to be psychotic, forced to take ziaprazidone [sic] to curb the effects of his schizophrenia. Through the story, he carries a Companion Cube that he hears talking to him and giving him advice. The main story is also intersected with flashbacks of the period during which GLaDOS was still being built, showing Rattmann's involvement in the project.

Soon after discovering Chell, it appears he has not taken his medication for a while, and he takes his two final pills, against the Companion Cube's advice not to take them. A first flashback is shown, with a younger Rattmann overhearing two colleagues saying they put cameras in the cameras, something that an unidentified person is not to suspect. While he runs through the facility and makes another mural, Chell reaches Test Chamber 19, and finally GLaDOS' chamber, where she destroys her.

Then another flashback set in GLaDOS' chamber is shown. There Rattmann is seen working with his colleague Henry, who compares their breakthrough with GLaDOS to Einstein discovering relativity and NASA reaching the Moon. Rattmann expresses his doubts about GLaDOS' reliability, since she always attempts to kill everyone when being powered.

Back to reality, Rattmann reaches for the surface, where he thinks Chell is. When he finds her, the Party Escort Bot is dragging her back into the facility.

Then a third flashback has Henry showing Rattmann the newly designed Morality Core, which is supposed to dampen GLaDOS' urge to kill.

Again back to reality, the Cube tells Rattmann to run away while he is outside, but feeling he is responsible for the whole mess, he prefers to get back inside, and save her.

Part 2
Part 2 opens with Doug Rattmann traversing the innards of the facility. The Companion Cube informs him that the anti-psychotic he took in Part 1 is starting to work, as the Cube slowly fades to silence. Doug finds Chell in her Cryo-Chamber in the Relaxation Center, where the Party Escort Bot has placed her. He decides to try to save her by getting to Cryo-Control, but the Sentry Turrets block his way. Finding a panel in the wall, he quickly realizes that GLaDOS' destruction blew the main power grid, and that all the Cryo-Chambers have gone offline as a result, including Chell's. Doug then attempts to run past the Turrets but is struck down.

Time for another flashback, this time set after GLaDOS has flooded the Enrichment Center with her neurotoxin. Rattmann, apparently the only survivor, is taunted by GLaDOS about his schizophrenia as he escapes from the main testing facility. While GLaDOS continues to taunt and manipulate him, Rattmann manages to reach the file room where he finds Chell's file, declaring that she's "the one", then puts her on top of the Test Subject list.

Back to the present, Rattmann is lying on the floor, wounded by the Turrets, reaches out to his Companion Cube but loses consciousness.

Another flashback begins, involving Henry having a conversation with GLaDOS. During the conversation, she tells him she has lost all interest in killing since she was fitted with a Morality Core and that she would like to perform a recreation of the Schrödinger's cat experiment during "Bring Your Cat to Work Day". She says that, added to the boxes and the cats, she needs a little neurotoxin. Harry, unaware of her malicious intentions, accepts, "as long as it's for science", thus sealing the employees' fate.

Doug regains consciousness, and his schizophrenia has returned. The Cube can talk again and asks about Chell being "the one" and how Doug knew she is, to which he admits it was just a hunch. The Cube then tells Doug to patch Chell's Cryo-Unit in the reserve grid to restart her life support, which works but keeps Chell in an everlasting sleep until she is woken up, "both alive and dead, until someone opens the box".

Exhausted, Rattmann crawls into the bed of a Relaxation Vault, and presumably falls asleep. It was later revealed by Valve that Rattmann was long dead before the events of Portal 2. On the floor, Chell's files scatter on the ground, showing that she should not be tested, as she is abnormally stubborn and never ever gives up. Ever.

포털 2
포털 2는 PC와 Mac, Xbox 360과 PS3에서 출시되었습니다.

사소한 것

 * 포털 2의 이야기를 구체화하기 위해, 개발사인 밸브는 애퍼처 시설 안에서 전'시회'를 기획합니다. 디오라마의 모습은 또 다른 회사의 측면을 보여줍니다. 회사의 다른 모습을 보여주는 디오라마의 모습은, 게임 공식 발표 직전에 취소됩니다.