We’ve been playing stealth games for decades now, infiltrating military bases undetected, choking henchmen from behind and packing ventilation shafts with their naked unconscious bodies. But making sneaking fun isn’t easy. Full spatial awareness, how to communicate your visibility, and reliability of tools and AI behaviors are a hard thing to pin down. Luckily, these games pull it off without disturbing a single dust mote. They’re the best stealth games you can play on the PC right now, and what we recommend for players looking to get their super quiet feet wet. 

Deus Ex

Deus Ex' sandbox structure made it a landmark study in open-ended design. The large environments and varied upgrade tree are designed to give you ways to solve tasks expressively, using imagination and forethought instead of a big gun. Nearly every stealth game on this list borrows something from Deus Ex, and it’s easy to see why.

Deus Ex pulled off experimental, player-driven stealth design in huge, tiered environments. It was the cyberpunk espionage dream, and for many modern developers, it still is. The last two entries in the series, Human Revolution and Mankind Divided, play with similar, more streamlined design, and while we recommend them as well, they still can’t brush with the complexity and novelty of the original. If you’re not big on playing old games, install some mods like Deus Ex Revision, and give it a shot.

Hitman

After Hitman: Absolution, it seemed that Blood Money would stay the golden standard for silly stealth sandbox shenanigans indefinitely, but IO Interactive surprised us all with Hitman’s new episodic format. For the better part of 2016, we were treated with a new level every month, each featuring a different setting, layout, and pocket universe of NPCs going about their clockwork lives. Agent 47 is the screwdriver you get to jam in wherever you choose. Watching the mechanism break around you (and reacting to it when things go wrong) is central to Hitman’s charm.I like the way Phil put it in his season review: “Strip away the theme and fantasy, and you're left with a diorama of moving parts—a seemingly perfect system of loops, each intersecting to create a complex scene. It's left to you to decide how you want to break it—whether it's by surgically removing key actors, or by violently smashing it all up with guns, bombs and a stuffed moose.”

Supported with a steady stream of updates, including temporary Elusive Targets and remixed levels, it’s still possible to play the entirety of season one in new ways (and season two is already in development). We might be getting a steady stream of Hitman forever, and videogames are better for it.

Splinter Cell: Chaos Theory

In the years since Chaos Theory, Splinter Cell and the majority of stealth games have veered from a focus on purely covert scenarios, and it’s easy to see why. Chaos Theory is a complex, punishing stealth game whose gratification is severely delayed (for the better). Getting through an area without a soul knowing takes pounds of patience and observation, and getting caught is not easy to recover from. It was a slow, arduous crawl, but a crawl unlike any other in the genre, with a level of realism we haven’t seen since. 

Accompanied by a Sam Fisher at peak Jerk Cowboy, as difficult as it was, we laughed through the pain. The multiplayer was also a bold experiment in asymmetry at the time, pitting Sam-Fishery spies against first-person shooting soldiers in a tense game of hide and seek.

Thief 2

Alongside Deus Ex, the Thief series introduced new variables to stealth games that have since been adopted as a standard nearly across the board. Using light and shadow as central to your visibility, Thief made stealth much more than the visible-or-not dichotomy of implied vision cones. 

The Thief series is still unparalleled in the subtlety of its narrative and environmental design. Jody Macgregor sums it up in a piece on the very subject: “Thief II ramps up the number of secrets within each level, but even with as many as a dozen hidden rooms and stashes to discover their placement is always just as subtle. A shooting range conceals a lever among the arrows embedded in the wall behind the targets, a bookshelf is slightly out of alignment, a glint of light pokes through the edge of a stone in a wall. Compare that to Deus Ex: Human Revolution, which sometimes hides one of the many ducts you can climb into behind a crate but more often plonks them into the corner of rooms beside a neon sculpture.”

The first two Thief games are interchangeable as the ‘best’ for most players, so be sure to play them both, but the second takes the cake as a best-of recommendation for working out some UI and AI kinks from the original. But with both games, install a few mods and it’s fairly simple to make them easier on the eyes and our modern design sensibilities. 

Mark of the Ninja

The biggest challenge facing stealth games has always been how to communicate whether or not you’re visible to enemies. While we’re still working out the kinks in 3D games, Mark of the Ninja solved just about every problem with two dimensions. 

Through clear UI cues, it’s easy to tell how much noise you’re making, whether or not a guard can hear it, and what spaces in the environment are completely safe to hide. There’s almost no room for error, at least in how you interpret the environment and your stealthy (or not) status within it. Accompanied by swift, springy platforming control and a robust ninja ability upgrade tree, by the end of Mark of the Ninja the challenge reaches high, but so too does your skill.

Dishonored 2

What surprised me most about Dishonored 2 is the density of its level design. Like other stealthy immersive sims, it features huge levels with any number of potential routes for getting through, but Dishonored 2 is the first to make me want to see every inconsequential alleyway. Nearly every space is as detailed as a room in Gone Home, decorated with natural props and people that tell a specific story. 

There are more systems and choices than ever, and while you explore, how you dispose of or sneak by guards is a playful exercise in self-expression and experimentation. Emily and Corvo have their own unique abilities, and a single playthrough won’t get you all their powers. Summon eldritch tentacle arms to fling psychically chained enemies into the sea, or freeze time and possess a corpse during for a particularly, uh, daring escape. Just make sure not to miss Sokolov’s adventure journals, they’re a treat.

Metal Gear Solid 5: The Phantom Pain

I think The Phantom Pain’s appeal is best summarized by how everything going wrong typically means everything is actually going well. Samuel’s anecdote from his review is a perfect example: “I forfeited a perfect kill-free stealth run of one mission because I couldn’t get a good enough sniper angle on my target before he took off in a chopper. Sprinting up flights of stairs to the helipad, my victim spotted me just in time for me to throw every grenade in my inventory under the chopper, destroying it, vanquishing him and knocking me over, before I made a ludicrously frantic escape on horseback. It was amazing, and I’m not sure it would’ve been vastly improved had I silently shot the guy and snuck out.” Wish I could’ve seen it, Sam.

For a series to go from weighed down by cutscenes, spouting nonsense about nuclear war and secret Cold War contracts with a few simple stealth sequences to a full blown open world stealth sandbox masterpiece (and on the PC too) was quite the surprise. As a silent Big Boss, there are hundreds of hours of wide open stealth scenarios to tackle in MGS5, despite its thinner second chapter. Systemically, this is one of the most surprising stealth games ever made, and as bittersweet a swan song as Kojima could leave us with before departing Konami for good.

Amnesia: The Dark Descent

It took me six months to finish Amnesia. It doesn’t allow you to play stealth games the way you’re used to, and by removing old habits, so goes your sense of security. The sanity mechanic intentionally denies you your habits by distorting your view and slowing down your character while looking at a patrolling enemy monster. Lovely, beautiful, safe, warm light also plays a part. The darker an environment, the sooner you’ll lose sanity, but if you whip out a lantern, guess who’s going to spot it? That gross bag of skin patrolling the halls. The enemy AI isn’t particularly smart or surprising, but in an atmosphere as rich as Amnesia’s you’ll think they were put on this earth to hunt you down, specifically. If you can stomach the scares, it’s a must.

Alien: Isolation

More than an incredible homage to ‘70s futuretech and the world of Ridley Scott’s masterpiece in horror, Alien: Isolation’s chief antagonist is a major step forward in first-person stealth horror design. The alien is a constant, erratic threat. It actively hunts you, listening for every small noise and clue of your presence, hiding in wait above for a sneak attack or—what’s that sprouting from your chest? Nice try. But besides the accomplished alien AI, Isolation makes good on its 25-hour playtime by constantly switching things up. 

As Andy Kelly wrote in his review, “In one level you might lose the use of your motion tracker. In another, the alien won't be around so you can merrily shotgun androids like it's Doom 3. Then your weapons will be taken away, forcing you to make smart use of your gadgets. It does this all the way through, forcing you to adapt and readapt to different circumstances, using all the tools at your disposal.” Alien: Isolation is both a striking, authentic homage to the films, and a consistently creative stealth gauntlet. If you don’t mind getting spooked, don’t miss it.

Invisible, Inc

Invisible, Inc nails the slow tension and tactical consideration of XCOM, but places an emphasis on subversion of enemies and security placements rather than direct confrontation. You’re not an overwhelming offensive force, and getting spotted almost always spells your doom. 

Chris puts it well in our Best Design award from 2015: “To the stealth sim, it introduces completely transparent rules. You always know what your options are, what the likely results of your actions will be, and your choices are always mitigated by resources that you have complete control over. There’s no chance failure, and very little trial and error. You either learn to make all of these totally-fair systems dance, or you fail.”

The turned based format means you get unlimited time to make a decision that would take a split second in a real time stealth game, but because of the extra space for consideration, Invisible Inc. piles on the systems, making every infiltration a true challenge, but one comprised of fair, transparent rule sets. Dishonored may test your sneaking reflexes, but do you have the deep smarts to be a spy? Invisible, Inc will let you know one way or the other.

At the end of Thief: The Dark Project, one of its characters muses on the future. Beware the dawn of the Metal Age, he says, looking out over the steampunk city. That line was contributed by Terri Brosius, one of the game's writers and designers as well as the voice of Viktoria (she also provided the memorable voice of System Shock 2's villain Shodan). The dialogue was a spur-of-the-moment addition, but it helped shape the series. Thief II would eventually be given The Metal Age as its subtitle, and the story of an industrial revolution overtaking the city would become its plot.

That's how committed the original trilogy of Thief games are to their foreshadowing, and it's part of what makes them unique among immersive sims.

In Warren Spector's post-mortem of Deus Ex all the way back in the year 2000, he coined the term 'immersive sim' to describe the type of game he and Ion Storm had created. Deus Ex needed its own subgenre because it is, as he put it, part role-playing game, part first-person shooter, part adventure game. Immersive sims are games that combine elements of other genres so you can play them your own way, with multiple paths to discover, each of which lets you jump genres as you please. These are the games where you can get past obstacles by talking or sneaking or killing, or sometimes even hacking them or casting spells at them or flying right over the top.

All that variability, all those systems intersecting to encourage player choice and freedom, are what it takes to count as an immersive sim. They don't require a conflict between philosophically distinct factions going on behind the scenes, but it's a common element nonetheless. Deus Ex has its Illuminati, System Shock 2 has the Many versus Shodan, Vampire: The Masquerade Bloodlines has competing undead clans, Dishonored has the Hound Pit Pub loyalists acting against the spymaster's conspiracy, and so on. In the Thief trilogy, progenitors of the immersive sim, it's the religious cults of Hammerites in conflict with Pagans, with the Keepers looking on as kind of referee-assassins.

You can't just dump secret history on a player straight away. Immersive sims are about freedom to choose your own way of playing, and not engaging with a bunch of boring exposition is a valid choice. (These are usually the games where you can jump on a table while someone is talking to you.) Instead designers hint at the backstory, letting players uncover it so we feel like we're learning things we're not supposed to, experiencing the the same rush we get from finding an unlikely method of infiltrating security.

Subtle as a thief

In Thief: The Dark Project, the first of the series, the Pagans are a cult you don't know much about until you realise one of your employers, Viktoria, is a member. By this point you're at least four missions deep and have been facing off against the rival Hammerites since mission two. But as early as the game's opening level, 'Bafford's Manor', there are hints of what's to come.

A letter from one of Bafford's agents describes Viktoria in passing immediately after summarising how the Hammers are interfering with his plans. Each mission's introductory cutscene opens with a quote from a song or prayer, several of which turn out to be Pagan texts. Those things are seeds that will bear terrible fruit later.

By the time you meet Viktoria you've probably forgotten the letter that mentions her. It's just one of many pieces of scene-setting in a level that also includes notes to a chef about how to prepare dinner, ledgers of illegal payments, a warning to the guards that they need to lift their game, and a letter about expensive relics worth acquiring. Some of these seem immediately relevant as a thief those descriptions of valuable relics are useful pointers, as is knowing the guards have a reputation for drunkenness but others are pure scene-setting.

Thief is full of the kind of scene-setting that broadens your view of its world, and that allows it to hide foreshadowing like this in plain sight. The first conversation you overhear outside Bafford's Manor is two guards arguing about going to the bear pits. One insists it's a good time because the scrawny bears have been fitted with spikes that make them vicious, while the other is old enough to remember when bears were terrifying beasts who didn't need all that knifery strapped to them.

While the bear pits are never mentioned again the theme of nature in decline becomes central, and a world where people need to be reminded the natural world is dangerous as the Pagans plan to has just been set up.

That's the best kind of worldbuilding: hinting at what's to come without you even realising it, while giving the feeling of a larger world beyond the levels you explore. Contrast that with Dishonored, a game that does many other things very well but is full of dialogue in which characters blatantly foreshadow later levels. During Corvo's prison escape through the sewers you overhear two of the City Watch talking about how scary the Flooded District is, setting up a level there. Granny Rags tells you her parties used to be even grander than the ones at Boyle Manor , as you'll see in that level.

If the bear pits conversation happened in Dishonored it would be to foreshadow a level that culminates in choosing whether to assassinate a mechanical bear or free it from servitude to rampage through the Distillery District.

Thief: Deadly Shadows, the third game in the series, has a famous mission set in the Shalebridge Cradle, an abandoned building with a history of horrors that include periods where it was used as an orphanage, an insane asylum, and both at once. If that seems unlikely, Kew Asylum here in Melbourne housed both the mentally ill and wards of the state until the 19th century.

You might hear an optional conversation in the Stonemarket hub about Shalebridge Cradle if you visit the right shop between levels, but you're just as likely to become aware of Shalebridge Cradle in the Old Quarter hub, where it looms over the eastern streets. You've passed its frightening visage and wondered what's up with the world's creepiest building over there before the story's got to the point where you realise you'll need to jump the wall and explore it. You're already dreading the place.

While immersive sims tend to foreshadow both their stories and locations, there's something else they need to hint at as well. These are games defined by their freedom of choice with regard to styles of play, but worried about the possibility players might not notice solutions and try to brute force every problem, shooting their way through and not having a good time.

The first level in Thief to give you complete freedom in how you infiltrate a building is 'Assassins', in which you break into the mansion of a crime boss named Ramirez. The outer wall has an open entrance, but it's guarded, the walkway is well-lit and it's covered in crunchy gravel that makes a lot of noise when you cross it. It's doable, but there are better ways over that wall. Adjacent to a low section of it there's a Tudor-style protrusion with wooden windows, which make perfect targets for a rope arrow. It's also possible to go low-tech and stack crates until you're high enough, which you're clued into by two neatly stacked crates nearby.

Once past the outer wall there's the mansion itself to breach. There are two balconies that can be jumped to from guard towers, which your eyes are drawn to by tiled roof sections that happen to be bright red. A gap in the back of the building is noticeable from a distance because of the distinct shadow it casts.

These clues about entrance routes aren't repeated in later levels you can't trust red roofs and stacked crates forever but are there to make you realise how many options are available so that you start to hunt for them yourself.

Thief II ramps up the number of secrets within each level, but even with as many as a dozen hidden rooms and stashes to discover their placement is always just as subtle. A shooting range conceals a lever among the arrows embedded in the wall behind the targets, a bookshelf is slightly out of alignment, a glint of light pokes through the edge of a stone in a wall. Compare that to Deus Ex: Human Revolution, which sometimes hides one of the many ducts you can climb into behind a crate but more often plonks them into the corner of rooms beside a neon sculpture.

Even harder to notice is the Thief games' use of water as an element of level design. When you transition from the relatively safe streets of the city to the more dangerous interior of Bafford's Manor it's through a well, and when you travel from the empty utility station outside Thief II's Shoalgate Watch House to its well-guarded inside, that's also through water.

The haunted mines below Cragscleft Prison are entered through water, and so is The Lost City. A bridge has to be crossed before you arrive at the manor in 'Assassins', and though you don't have to swim out of the well in 'Precious Cargo' it starts raining once you exit.

In every case water marks a dividing line, emphasising that you've crossed into a high-risk area without the HUD needing to note it. Even if you're unaware of the motif, subconsciously the idea that things are about to get real as soon as you get wet seeps in as you play.

Compared to the original Thief trilogy, other immersive sims feel almost insecure and more obviously designed in the ways they lampshade upcoming twists in their story, later levels you'll explore, and the ways you can explore them once you reach them.

With their ubiquitous airduct entry points and audiologs scattered around incongruously to insure you don't miss a single nuance of backstory they rarely surprise us in ways that feel organic. The gun that goes off in act three was not only on the mantelpiece in act one, but two guards talked about the odds of it going off and then recorded the gunshot and left the tape in a nearby trashcan.

Thief lets you know what's possible but does so with subtlety. It's a game about hiding that hides its own possibilities in plain sight, and other immersive sims could learn from that.