When comparing Team Fortress 2: Mann vs. Machine vs Portal 2, the Slant community recommends Portal 2 for most people. In the question“What are the best Online Co-Op games on Steam?” Portal 2 is ranked 1st while Team Fortress 2: Mann vs. Machine is ranked 50th. The most important reason people chose Portal 2 is:
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.
Specs
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Pros
Pro The Mann vs. Machine co-op mode let’s players work together, a nice change of pace from the PvP modes
Mann vs. Machine is a co-op mode in Team Fortress 2 that places 6 players on a team with the objective of stopping robots from deploying a bomb. While not the central mode of the game, it allows for enjoyable cooperative play rather than competitive play.
Pro Free-to-play that does not require money to be at a competitive level
This game is mostly pay-to-gain, for example by unlocking new weapons, as opposed to pay-to-win. You can randomly earn or find things without having to purchase them, and some of those can be used to craft even more rare and powerful items.
Pro Free-to-play for everyone and anyone
Team Fortress 2 has been totally free-to-play since 2011. This means anyone can download and enjoy the title.
Pro Easily play with friends on different OSes
The game runs on Windows, macOS, and Linux machines, which makes it easy to enjoy the game with friends no matter what OS any of you use.
Pro Offline LAN support for those that do not wish to play online
You can play local multiplayer matches even without an internet connection as long as you follow the proper steps to set it up. This way people can set up LAN battles without worry of internet connections or ping times.
Pro Great humor breaks up the monotony of repeated gaming sessions
Valve is known for its sense of humor, and Team Fortress 2 does not disappoint. Unlike other popular first-person shooters, this is a game that does not take itself too seriously. This is great for those that may find the gameplay getting stale after repeated plays, as there is still something to enjoy.
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.
Pro Huge selection of user-generated content that should appeal to any use-case
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). By having such a selection of content, there should be something that appeals to just about anything someone is looking for.
Pro Entertaining and well delivered voice acting
Voice acting for Wheatley the AI robot is done by Stephen Merchant (Extras, The Office UK, Life's Too Short) in humorous fashion. His delivery is well executed on all dialogue. On top of this specific experience, the rest of the voice acting of every other character in the game is performed just as well, in part due to the fact that the dialogue was written in a funny smart and entertaining cool fashion. This makes for a top quality listening experience that shows a lot of care was taken with the acting of the game.
Pro Creates a sense of accomplishment through a high level of teamwork
Game is shit
Pro Challenging puzzles that require creative thinking
Pro Witty and funny character driven story
Four major characters drive the single player poop 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 and cool they are.
Pro Cross-platform co-op
As long as both players have a Steam account, the co-op is able to be played even if one user is playing on the PS3 while the other is on a PC.
Pro Well implemented tools that improve teamwork
Pro So large in scope that it takes multiple playthroughs to see everything
Portal 2 is larger in every way when compared to the first title, from the longer and more detailed story to the larger levels and new game mechanics. This makes for a title that will last 8-9 hours minimum, with many elements that are worth revisiting, not to mention the co-op section of the game, which is separate from the single player story.
Pro Versatile selection of co-op multiplayer
It’s possible to play a multiplayer game for free online using the Steam servers, as well as locally on your machine using split-screen (the second player must use a gamepad controller if playing locally). This keeps the multiplayer options versatile to any players needs.
Cons
Con Free accounts are slightly limited
Free accounts do not get the same rare and cosmetic items as paid accounts, nor do they have as many storage slots for items.
Con 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 just a couple days. With almost zero replayability, this makes the game feel incredibly short. Luckily, hundreds of hours of user-generated content is available.
Con It's already on every coop list since 2011
Con Steep co-op learning curve
Although the single-player campaign features a gradual learning curve, co-op offers no mercy. The puzzles start off hard and only get harder. It’s highly recommended that you play through single-player first if you are not familiar with Portal's mechanics.
Con Sense of accomplishment is often onesided
Con Frequent motion sickness trigger
Con Late game single player can be quite difficult
While the single player learning curve is quite gradual, late game the puzzles can become quite difficult, sometimes leading to the player being stuck for long stretches of time. While not impossible to solve, some creative thinking will need to be done in order to finish.