When comparing Portal 2 vs DOOM, the Slant community recommends Portal 2 for most people. In the question“What are the best singleplayer games on Steam?” Portal 2 is ranked 1st while DOOM is ranked 18th. 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 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.
Pro Fast-paced, exhilarating combat
DOOM differs from most modern shooters because it abandons cover-based gunplay and instead encourages you to never stop advancing. This is achieved by not only making your character very nimble, allowing you to run at high speeds and jump great distances, but also by removing weapon reloading entirely.
There is also the glory kill system, which restores your health whenever you melee kill an enemy, so no waiting for your health to restore by itself either.
All of this creates exhilarating gunplay where you never have to pause for anything.
Pro Refreshing single purpose gameplay
There is no character development, this is a single purpose game that makes itself very clear from the outset. You are in this game to do one thing, kill demons, sometimes in the most gruesome ways possible. The game is very unapologetic about this, which is refreshing in a time when many games focus on story and play out like an interactive movie. This is much more a throwback to simpler times, run and gun, and it can be quite fun.
Pro Level editor for endless content
The game comes with a level editor, which allows you to create new maps and game types. These can be maps that play similarly to the campaign or even unique puzzle maps. You can share your creation online and also download other players' creations. This provides an almost endless stream of content, adding considerable longevity to the game.
Pro Fun hidden secrets
There are quite a few easter eggs and hidden secrets in the game, such as old school Doom 95 levels, a Commander Keen skull, a Terminator 2 animation, and even hidden Doomguy toys that your character will fist bump. There's a lot of these to find, creating a very entertaining side activity.
Pro Superb graphics that run quite well
Highly detailed environments, fearsome enemies, colorful particle effects, beautiful lighting, and a lot more. Whatever you're looking at in DOOM, it's a treat for the eyes, all without ever dropping below 60 frames per second.
Pro Great customizable weapon selection
There are more than 20 weapons in DOOM, including the super shotgun, the rocket launcher, and even the BFG9000. Each weapon has two modes that can be improved with one of three upgrades, totaling to over 100 possible combinations. Most of the combinations are really fun to use, which creates enough variation to keep you entertained for multiple playthroughs.
Pro Fantastic level design
The levels in DOOM are quite large, with multiple floors/levels, and many secrets. Some areas are very spacious, making large-scale battles possible, and some are labyrinth-like, hiding enemies behind every corner. You'd think it would be a very linear and guided experience, but most of the time it's up to you where to go and how to get there. Each one of these aspects make it a blast to fully explore the levels.
Cons
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.
Con The gore might not be for everyone
DOOM has a fair amount of gore. Whenever you kill an enemy there's blood, guts, and limbs flying everywhere. Melee kill are particularly brutal with your character twisting enemy necks and breaking their bones. Some may find that level of graphic violence off-putting.