Game: Portal/Portal 2

Wikipedia:

Portal is a single-player puzzle-platform video game developed by Valve Corporation. The game primarily comprises a series of puzzles that must be solved by teleporting the player's character and simple objects using the "portal gun", a device that can create inter-spatial portals between two flat planes. The player-character, Chell, is challenged by an artificial intelligence named GLaDOS (Genetic Lifeform and Disk Operating System) to complete each puzzle in the Aperture Science Enrichment Center using the portal gun with the promise of receiving cake when all the puzzles are completed. The game's unique physics allow momentum to be retained through portals, requiring creative use of portals to maneuver through the test chambers.

Wikipedia:

Portal 2 is a first-person puzzle-platform video game developed by Valve Corporation. Other gameplay elements were added to Portal 2 including tractor beams, laser redirection, and special paint-like gels that impart special properties to objects they touch. Within the single player campaign, the player returns as the human Chell, having awakened from stasis after many years. Chell must navigate the dilapidated Aperture Science Enrichment Center and its test chambers with the portal gun while the facility is rebuilt by the reactivated GLaDOS, an artificially intelligent computer. With a larger storyline Valve introduced additional characters including Wheatley, a robotic personality sphere voiced by Stephen Merchant, and recordings of Aperture Science CEO Cave Johnson, voiced by J.K. Simmons. Ellen McLain reprised the role of GLaDOS. Additional music from Jonathan Coulton and The National appear in the game. Portal 2 also includes a two-player co-operative mode in which the player-characters, robots Atlas and P-Body, must work together to complete each test chamber using their own individual portal guns.

Basically, Portal is one of the best games out there. It's actually a genuinely clever game, and you can spend hours playing it without realising that you've practically wasted most of your day trying to solve the puzzles. There is actually no point when you are given a gun that shoots bullets; you get the Portal Gun and that's it.

Does anybody else play it? I finished the single player campaign today and the co-op a couple of days ago. And if you haven't actually played it before, you can go to the Steam website and download the interface. If you've got a decent graphics card, I highly recommend buying the game from the Steam website, because you can download it straight to your PC from there. That's what I did, and you can use Steam to co-op across PC and PS3 if you do so wish.

Wow, this was a ramble. Basically, does anybody else play it?

Yes ! The portals are my favorite games ever <3
I beat Portal last week & am at Cave Johnsons so far in Portal 2.
Was I the only one who loved GLaDOS ? even when she you know what I loved her ! She's my bff ! lmao(:

Best. Games. Ever.

I like watching my boyfriend play it, but it makes me motion sick. Portal 2 looked like so much fun, but I can only play it like 10 minutes before I have to lay down.

Portal 2 is amazing.
GLaDOS is too funny. xD

I'm part way through the first game and so far I'm really enjoying it.

I love Portal. (: It's challenging, a little, but fun and has nice graphics. Overall, a good experience.

Still one of the best games I have played.

I just played it over the summer, and it's definitely one of my favorites. There's not a single thing I don't like about it, and I'm horrible at video games, so solving the puzzles was always so rewarding. The humor is top-notch, too.

Portal is by far one of my favourite games ever. The puzzles were the right amount of difficult as you progressed and were super rewarding when you finally figured it out/got the timing right/etc. GLaDOS and Chell were excellent characters, despite not ever really getting much background on either one (until you get to Portal 2 where GLaDOS is explored a little more, while Chell [and Rattmann] is given some background in the comic Lab Rat). Also the cake is a lie, etc etc. :p

Portal seems to be such an influential game that we actually had to play it for an English class I took in order to analyze the function/concept of artificial intelligence.

I did love Portal 2 as well, but I feel like it didn't resonate with me nearly as much as the original one. But I do love Wheatley and we did get much more content/mechanics to use outside of just the portal gun, so that was really awesome. And the Co-Op portion of Portal 2 was top (Atlas and P-Body are so cute uwu).