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Security 51 Game Cover

About Security 51

Security 51 is a single player casual simulation game with horror, mystery and science fiction themes. It was developed by Alawar and was released on August 12, 2026. It received mostly positive reviews from players.

A "SIMPLE" JOB Security 51 is an atmospheric horror security guard simulator inspired by Papers, Please, and SCP paranoia. You're on duty in the underground bunker of Area 51, where the most dangerous part begins at the elevator: the shaft descends for miles down to unknown levels. Whether it's laboratories, anomalies, inhumane experiments, or something alien—you're not supposed to know. Your task…

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Games Like Security 51

Looking for games like Security 51? Here are top casual simulation recommendations with a horror, mystery and science fiction focus, selected from player-similarity data — start with Thank You For Your Application, Off Tape: Welcome or What Floor?.

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Reviews

71%Audience ScoreBased on 214 reviews
gameplay26 positive mentions
grinding16 negative mentions

  • Unique blend of Papers Please gameplay with SCP/Area 51 sci-fi horror theme and humor, offering a fresh and engaging experience.
  • Nice pixel art style and animations that contribute to atmosphere and player enjoyment.
  • Daily changing rules and mechanics add variety and maintain player interest, with an addictive gameplay loop and different endings offering replay value.
  • Lack of a deep story, emotional engagement, and character development, resulting in a shallow narrative and low player investment.
  • Gameplay can become repetitive and too easy, with insufficient challenge, bland progression, and mechanics that lack meaningful impact on outcomes.
  • Some UI/UX issues including unclear or inconsistent instructions, tedious tutorials that repeat on replays, expensive but nearly useless upgrades, and occasional bugs or confusing mechanics.
  • gameplay

    131 mentions Positive Neutral Negative
    20% positive mentions, 75% neutral mentions, 5% negative mentions

    Gameplay is heavily inspired by Papers, Please, offering a familiar document-checking loop with added mechanics like blood sampling and quarantine, though these new elements often feel shallow, poorly explained, and disconnected from the story. While some find the gameplay fun and addictive with a good variety of tasks, many criticize it for repetitiveness, lack of meaningful consequences, clunky controls, and a grind-heavy progression that lacks depth and polish. Overall, it’s an enjoyable time-killer for fans of the genre but falls short of its potential due to underdeveloped mechanics and a weak narrative integration.

    • “The pixel art, music and theme are great, and the gameplay loop is fun and addictive enough.”
    • “Although the ever-increasing load of responsibilities dumped onto our poor, hapless security guard protagonist may seem like a lot for some players, the game is careful not to overwhelm you with a myriad of mechanics all at once.”
    • “You have different mechanics in response to certain in-game events, for example, first you can cross the border with only your ID if you are from certain country, next you need a passport, but two days later there is an epidemic in another country so people from there need a medical certificate that is valid for a certain period of time, then afterwards, the game changes the mechanic putting two or more documents into only one, later on, you have contraband, terrorist threats and so on. My point is, there is a story, simple, not too elaborated, but feels natural, goes with the flow of the game, and the aesthetic and the atmosphere are just great.”
    • “The best part about Papers, Please was how every day had something interesting happen with a short but heavily branching storyline, and here it's just grind after grind, and a lot of the game mechanics don't seem to be really developed.”
    • “All criticisms in the negative reviews are valid: the game is short, the mechanics are too simple, no choices (or mistakes) matter, nothing is at stake, the dialogue is either non-existent or cringy, and the endgame is a hilariously lazy choice by the dev.”
    • “Now, on Security 51, you have none of that, it's just way too random. One day you must check internal organs, next day almost everybody gets a free pass. The idea of 'let everybody pass except...', 'ignore previous orders and call security if...' and 'ignore every order if...' are great ideas, but in this case it is just poorly implemented. What's going on the surface feels totally unrelated to the main story of your character, there is no correlation between the surface and the visitors you must check, some mechanics need improvement, the microscope thing is just way too tedious.”
  • story

    80 mentions Positive Neutral Negative
    21% positive mentions, 71% neutral mentions, 8% negative mentions

    The story is generally seen as minimal and underdeveloped, with many players noting a lack of meaningful plot, character depth, and impactful choices. While the game provides a basic premise and branching paths tied to the player's decisions, it often feels disconnected from the gameplay and lacks the moral tension and narrative engagement found in similar titles like Papers, Please. Some appreciate the quirky themes and simple progression, but overall, the story is considered a weak point that could benefit from greater integration and depth.

    • “You have different mechanics in response to certain in-game events, for example, first you can cross the border with only your ID if you are from a certain country, next you need a passport, but two days later there is an epidemic in another country so people from there need a medical certificate that is valid for a certain period of time. Then afterwards, the game changes the mechanic by putting two or more documents into one. Later on, you have contraband, terrorist threats, and so on. My point is, there is a story, simple, not too elaborated, but feels natural, goes with the flow of the game, and the aesthetic and the atmosphere are just great.”
    • “The game has a good story and very good gameplay and I like it a lot. I recommend you give it a try.”
    • “Great game, more in-depth "Papers, Please" with an interesting story!”
    • “The game has no story or depth whatsoever.”
    • “It took me seven hours to realize that there wasn't going to be any story and that everything just loops, with only slight changes to the document-processing rules.”
    • “There's no story here, or characters, all the people that you meet have the same few boring lines of dialogue and are completely disposable, the newspaper is randomized and has nothing to do with what is actually happening in the world.”
  • graphics

    21 mentions Positive Neutral Negative
    57% positive mentions, 29% neutral mentions, 14% negative mentions

    The game features charming and detailed pixel art with a nostalgic, retro-style aesthetic that many players find appealing and thoughtfully designed. While the visuals and animations are praised for their humor and atmosphere, some users note issues with clarity, such as difficulty reading small fonts or distinguishing details on smaller screens. Overall, the graphics effectively support the game’s simple yet engaging storytelling and mechanics, enhancing its unique style and mood.

    • “The whole concept and art style of the game is what got me on board to play it.”
    • “Whoever was responsible for the aesthetics of this game should be proud of the job they did.”
    • “Amazing retro-style graphics, interesting storyline, and fun challenges that never get old.”
    • “The problem with this one is that the graphics are not clear enough to pick up things like a rash. I can't see it; it looks the same to me. Due to the faint type font, I can't read the details easily because I can barely see the writing, which makes this game unplayable for me.”
    • “I also ran out of time and didn't serve even half of the people. I didn't get the lift, and I couldn't find the form to put the reason for refusing entry. The interface is messy and the graphics unclear. However, I am playing on the Steam Deck, so maybe it's better on a bigger screen.”
    • “All in all, the gameplay is pretty easy if you focus on tasks. The music is okay despite not having any metal, but the graphics are nothing out of the ordinary because it is pixels.”
  • humor

    18 mentions Positive Neutral Negative
    100% positive mentions, 0% neutral mentions, 0% negative mentions

    The game's humor is generally appreciated for its cheeky, corny, and lighthearted tone, enhanced by detailed pixel art and funny animations, making it a key attraction. However, some find certain comedic elements forced or out of place, with the humor lacking depth and emotional impact, which can make the experience feel tedious over time. Overall, it offers a fun, satirical atmosphere that suits its routine work simulation, though it does not strongly engage players through meaningful choices or moral dilemmas.

    • “Combination of Papers Please and SCP with a good dose of humor, which was the main reason to purchase the game when I saw it.”
    • “Fantastic pixel art and excellent use of humor help elevate it from a pretty cool game to a genuinely great one.”
    • “The checkpoint loop is satisfying, the escalation from 'check the badge number' to 'count how many organs this man has' is funny, and the pixel art suits the bunker well.”
  • grinding

    16 mentions Positive Neutral Negative
    0% positive mentions, 0% neutral mentions, 100% negative mentions

    Grinding in the game is frequently described as tedious and repetitive, with progression feeling slow and often requiring repetition of early segments and tutorials. While some appreciate the underlying ideas and narrative, the grind-heavy mechanics, random elements, and costly upgrades diminish engagement and can make post-story play less enjoyable.

    • “Security 51 has some great ideas and a neat setting, but the tedious progression, lack of difficulty, and repetitive design make it hard to recommend sticking with it past the first timeline.”
    • “The endgame is interesting but grindy, and the upgrades feel way too expensive at the moment for the relatively short duration of a playthrough.”
    • “Frustrating progression: turns into a tedious chore of replaying the same early-game dialog and steps over and over.”
  • replayability

    12 mentions Positive Neutral Negative
    25% positive mentions, 50% neutral mentions, 25% negative mentions

    The game offers multiple endings and branching paths that suggest replayability; however, many users find the randomized elements too predictable, leading to repetitive, autopilot gameplay. While some appreciate the game's potential for extended playtime, others feel the replay value is limited and does not deliver significant variation, making repeated plays feel like redundant content.

    • “There are multiple paths that give the game replayability too.”
    • “The game definitely has replayability with the multiple endings and different pathways.”
    • “There are branching paths with different endings, so the game should have some degree of replayability.”
    • “The randomization of checks adds minimal replay value because the telltale signs of infected individuals are far too obvious, allowing you to go on autopilot and mindlessly run down a checklist without engaging your brain.”
    • “The various endings are real, the replay value is not right now.”
    • “But it is sold on replay value and multiple endings, and the replay is the part that does not work, so you are being asked to pay for content that is functionally the same content twice.”
  • music

    7 mentions Positive Neutral Negative
    57% positive mentions, 0% neutral mentions, 43% negative mentions

    The music in the game is widely praised for fitting well with the pixel art and overall theme, often described as catchy, enjoyable, and chill. While not universally hailed as exceptional, it consistently enhances the relaxing and addictive gameplay experience.

    • “The pixel art, music, and theme are great and the gameplay loop is fun and addictive enough.”
    • “The pixel art and animations are superb, as is the music.”
    • “Not finished it yet but, a couple of hours in and will just put down as a recommend for the price and the loop, it is Paper Please light, nice art style, very chill soundtrack and a fun setting.”
    • “The music is okay, but it lacks any metal elements.”
    • “Graphics are nothing out of the ordinary because it is pixels.”
    • “Music is also bumpin'.”
  • atmosphere

    4 mentions Positive Neutral Negative
    75% positive mentions, 0% neutral mentions, 25% negative mentions

    The atmosphere is generally praised for its strong sense of tension and immersion, effectively making each decision feel critical. While some note a heavier focus on puzzle-solving and document checking, the evolving mechanics and natural story progression contribute to a compelling and well-crafted environment. Overall, the aesthetic and atmosphere are considered engaging and well-executed.

    • “The atmosphere is thick with tension, and every decision feels critical.”
    • “You have different mechanics in response to certain in-game events, for example, first you can cross the border with only your ID if you are from certain countries; next, you need a passport; but two days later there is an epidemic in another country so people from there need a medical certificate that is valid for a certain period of time. Then afterwards, the game changes the mechanic by combining two or more documents into one. Later on, you have contraband, terrorist threats, and so on. My point is, there is a story, simple, not too elaborate, but it feels natural, flows with the game, and the aesthetic and atmosphere are just great.”
    • “Nice atmosphere.”
    • “It focuses more on the memorization and puzzle-solving aspect of what made Papers Please interesting... there are like more than a dozen more things to check before letting a person pass, but in my opinion, that doesn't make up for the lack of atmosphere.”
  • emotional

    4 mentions Positive Neutral Negative
    100% positive mentions, 0% neutral mentions, 0% negative mentions

    The emotional aspect of the game is lacking depth and impact, with new mechanics failing to create genuine emotional connections. Decisions feel superficial and interchangeable, resulting in minimal emotional weight or engagement for the player.

  • optimization

    4 mentions Positive Neutral Negative
    75% positive mentions, 25% neutral mentions, 0% negative mentions

    The game demonstrates excellent optimization, running smoothly without performance issues while maintaining impressive visuals. Players appreciate that the gameplay feels enjoyable and seamless, with no complaints regarding performance.

    • “The gameplay and story, the additions to what the demo offered, and the game performance all left me impressed!”
    • “Now to the performance, and I don't have a single complaint.”
    • “I'm not exactly surprised that this game runs well after having played and seen the wonderful performance of the demo, but it still is nice to have a game that looks good, feels enjoyable to play, and runs well!”
  • stability

    2 mentions Positive Neutral Negative
    0% positive mentions, 0% neutral mentions, 100% negative mentions

    The game is frequently criticized for being buggy and unstable, with many users experiencing significant technical issues that impact gameplay. Stability appears to be a major concern among players.

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Play Times

5h Median play time
270h Average play time
4-800h Spent by most gamers
*Based on 3 analyzed playthroughs
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Frequently Asked Questions

Security 51 is a casual simulation game with horror, mystery and science fiction themes. Common tags for Security 51 include politics, indie, trading, aliens, pixel graphics and others.

Security 51 is available on PC, Mac OS, Steam Deck and Windows.

On average players spend around 270 hours playing Security 51.

Security 51 was released on August 12, 2026.

Security 51 was developed by Alawar.

Security 51 has received mostly positive reviews from players. Most players liked Security 51 for its gameplay but disliked it for its grinding.

Security 51 is a single player game.

Similar games include Thank You For Your Application, Off Tape: Welcome, What Floor?, Majoris Nightmare, Do Not Feed the Monkeys and others.