Recs.
Updated
Portal 2 is a first person shooter puzzle game that contains a humorous story with endearing characters. The gameplay itself focuses on solving fun and incredibly well designed puzzles, by placing adjoined portals with your portal gun.
SpecsUpdate
Pros
Pro Witty and funny character driven story
Four major characters drive the single player campaign, and they are amazing. Three of which have explosive personalities, bring humor, suspense, sadness, and empathy. The other being Chell, who doesn’t speak but her interactions with the rest of the cast make her all the more mysterious and interesting. Most of the time you don’t even see or directly interact with the characters, but that just shows how great they are.
Pro Main co-op campaign is short
The co-op campaign in Portal 2 is about 4 hours long for experienced players, meaning it could be beaten in a weekend. With almost zero replayability, this makes the game feel incredibly short. Luckily, hundreds of hours worth of user-generated content is available.
Pro Hundreds of hours of user-generated content
The game has more than 60,000 co-op puzzles created by users through the Steam Workshop and through mods. Because it is user-generated content, the quality and size of these puzzles vary widely, including everything from simple, one-off chambers to full-fledged expansions with high-quality stories, voice-overs, and new gameplay elements (for example, Mel).
Pro Well implemented tools that improve teamwork
In a game that requires perfect timing and teamwork, Portal 2 features many tools to facilitate teamwork. One of the most helpful is a 3-second countdown timer that can be initiated and shown to both players to ensure you launch that portal or jump at the perfect time. In addition, there is a marker that you can place on certain objects for your teammate to see as well as a setting that shows your partner's view super-imposed on the corner of your screen.
Pro Co-op does not punish when you want to goof off with or troll the other player
While Portal 2 requires focus and logic, it does not punish players for causing a bit of mischief. The instant respawn system means trolling your friend will affect almost nothing in the game, as there are no in-game setbacks when you die. Being able to stop at any point in the game to just goof around is great for releasing some steam, even when it is at the expense of your co-op partner.
Cons
Con Steep co-op learning curve
Although the single-player campaign features a gradual learning curve, co-op gives no mercy. The puzzles start off hard and only get harder. It is highly recommended that you play through single-player first if you are not familiar with Portal's mechanics.
Con Unique co-op levels with co-op specific tools
In Portal 2, co-op is a completely different set of puzzles than the single player campaign. Almost all puzzles require a high level of teamwork that will leave you feeling proud of what you have accomplished.
In a game that requires prefect timing and teamwork, Portal 2 features many tools to facilitate teamwork. One of the most helpful is a 3 second countdown timer that can be initiated and shown to both players to insure you launch that portal or jump at the perfect time. In addition, there is a marker that you can place on certain objects for your teammate to see as well as a setting that shows your partners view super-imposed on the corner of your screen.