Stealth mechanics are a common feature in modern video games. Even games that are traditionally action-focused,likeElden Ringfor example,contain at least a few stealth abilities, usually cobbled together from mechanics featured in other games. Crouching in tall grass? That’s stealth. Sneak up behind an enemy for an easy kill? That’s stealth too. Running away until the enemies “forget” they saw a threat? That’sdefinitelystealth.

RELATED:Stealth Games With Good World Building

However, when it comes to games where stealth is the primary focus, these mechanics are much more robust. Enemies are smart and deadly, and their vision and hearing pick up the slightest hints of movement. The best - and most difficult - stealth gamesembrace all the features mentioned aboveas well as many others, weaving them into a tapestry of danger that requires strategic planning, lightning-fast movement, and a finely-tuned sense of timing to succeed.

9Deus Ex: Mankind Divided

TheDeus Exseries has always been known for its incorporation of stealth mechanics into what outwardly appeared to be a sci-fi FPS game. The newer entries to the series take that stealth element to even greater heights, especially in the semi-open world city of Prague inDeus Ex: Mankind Divided.

RELATED:Best Stealth Attacks In Gaming

Mankind Dividedreceived a lot of (fair) criticism about its story, particularly its abrupt ending. Lost in that conversation is the treasure trove of stealth options provided to players as they explore Prague. Adam Jensen has some unique stealth abilities, and whether he’s jumping across rooftops or skulking through sewers, the game incorporates them into its systems incredibly well. When players encounter a room full of enemies, and the real test begins. Trying to clear the game non-lethally is intensely challenging, and will require every bit of tech Jensen installs on his body.

8Chronicles Of Riddick: Escape From Butcher Bay

When it comes to movie tie-in games, one that gets criminally overlooked isEscape From Butcher Bay, the tie in to Vin Diesel’sThe Chronicles of Riddickfrom 2004. The game is a prequel to the franchise’s first movie,Pitch Black, and chronicles Riddick’s escape from the most dangerous and brutal prison colony in the galaxy. It’s not entirely stealth-focused, there are moments of first-person shooting and hand-to-hand combat, but the stealth sections are where the game really shines.

For one, they’re extremely challenging. Riddick can die in just a few hits, so caution dictates every move. That said, these sections also make the best use of Riddick’s skills, including his “eyeshine” ability to see in the dark, which can also blind him if used in bright areas. Riddick can take out enemies from behind or by dropping from above, getting quick kills with improvised weapons he finds throughout the prison. The game strikes a perfect balance between making Riddick feel vulnerable, and making him feel like a total badass.

Deus Ex Mankind Divided features a fantastic array of stealth abilities

7Dishonored 2

TheDishonoredseries isbest known for its stealth gameplay.While technically players can take an aggressive playstyle (and a few have pulled off some awesome sequences doing so), the stealth approach is the most challenging - and most rewarding - way to play. The first game in the series acts as a fantastic proof-of-concept, butDishonored 2is refined to a spectacular degree.

The way to truly makeDishonored 2one of the hardest stealth games of all time is to try playing non-lethally on the hardest difficulty. Even without changing difficulty settings, it’s still a huge challenge. One enemy won’t pose much of a threat, but as soon as a few of them work together death comes quickly afterward. Combine that with the extreme verticality and unusual gimmicks in each level, andDishonored 2never fails to put up a challenge.

Chronicles of Riddick Escape From Butcher Bay pushes Riddick to the limits of his abilities

6Alien: Isolation

Most players wouldn’t immediately think ofAlien: Isolationas a stealth game, but while the player does receive the occasional weapon, for the most partthey spend the game hidingunder medical gurneys and inside closets, quietly moving past a host of dangerous enemies. The one enemy that transforms this game from hard to very hard is the Xenomorph.

There are only a few missions where players deal with the Xenomorph directly, but they are widely considered to be the best (and hardest) parts of the game. Players can track the Xenomorph via the iconic motion detector, but they move more slowly while doing so. Even if they manage to detect the thing, there’s no way to fight it. It just gives the player an extra moment to find somewhere to hide. If they don’t, it’ll take the Xenomorph about three seconds to kill them.

A player sitting on top of a roof in Dishonored 2

5Mark Of The Ninja

It doesn’t necessarily leave this impression upon its completion, butMark of the Ninjais ahardgame. Its generous checkpoint system makes it easy to forget how many attempts each level - and even each section of a level - takes to complete, but this is a game that takes its stealth very seriously.

RELATED:Indie Games That Require A Lot Of Stealth

2D platformers don’t really jump to mind when imagining an ideal stealth experience, but Klei Entertainment crafted a masterclass in slow, quiet action gameplay. Every enemy the player faces requires pinpoint timing and a pre-planned escape route, and as the levels progress and the challenge ramps up, not even that will be enough to ensure success.

4Splinter Cell: Chaos Theory

There have been threeSplinter Cellgames released sinceSplinter Cell: Chaos Theoryin 2005, but when fans envision a new, modern take on the series, that visionalways harkens back toChaos Theory.For a franchise with as much success asSplinter Cellhas had, this entry is still the premier example of what the ultimate Sam Fisher video game looks like.

A big part of that is just howrealthese games feel. There is a palpable sensation to the way Sam hides in the shadows. He’s not a bullet sponge, and his enemies always have the more powerful weaponry, but Sam Fisher possesses a unique set of skills (and a few essential gadgets) that make him a nightmare to deal with. It’s up to the player to master those skills and gadgets, because one misstep into a well-lit room will leave Sam exposed and almost completely helpless.

Alien Isolation xenomorph shadow across dead body

3Metal Gear Solid V: The Phantom Pain

TheMetal Gearfranchise practicallypioneered the stealth genre,dating all the way back to the first game in 1998. While Hideo Kojima has spent the better part of his 30-year development career refining the series' gameplay(with a couple digressions along the way),he hit a pinnacle withMetal Gear Solid V.

Most stealth games give the player some sense of when they are or are not visible to enemies.The Phantom Paindoes no such thing, and instead relies on player understanding. If itseemslike Snake should be hidden, he probably is. It takes some getting used to, especially in the game’s brightly-lit areas, but the more players adapt to that system the more reliable it becomes. Combine that with a multitude of gadgets, weapons, and companions Snake can bring with him on missions, and despite thecontroversy surrounding its development,The Phantom Painis arguably themost complete stealth experienceever made.

Mark of the Ninja is a very challenging stealth indie

2Shadow Tactics: Blades Of The Shogun

For the PC players out there,Shadow Tactics: Blades of the Shogunoffers a stealth experience that stands apart from every other entry in the genre. In a typical stealth game, players would have full control over one character. InShadow Tactics, players have an isometric tactical view through which they issue orders to five characters at once.

Naturally, this significantly increases the game’s challenge. Guiding those five assassins through enemy camps riddled with enemies is no easy feat. It takes planning, caution, and wits to pull it off. The best option is usually to avoid combat entirely, picking off the occasional lone guard when there is no other choice.Shadow Tacticsstands apart in its genre both for its gameplay, its setting, and its high degree of difficulty.

Sam fisher stealthily choking out a guard as another approaches in Splinter Cell Chaos Theory

1Hitman: Absolution

There was no doubt that aHitmangame would make this list, but of all the possible entries, whythe often-criticizedHitman: Absolution?The game was heavily panned for taking theHitmanfranchise away from its roots and pushing it in a more action-heavy direction. Well, that’s exactly why it’s the hardest stealth game of all time: because it’s not designed to be a pure stealth game.

CrankingHitman: Absolutionup to the hardest difficulty and trying to play through it without being detected is virtually impossible. Crowds are dense in this game, and enemies become suspicious at the faintest hint of Agent 47’s presence, and will draw their weapons the next instant. The gamewantsplayers to start shooting to save themselves. Ignore that solicitation, and this may be the hardest challenge players will ever face.

Snake looking over an enemy camp

Shadow Tactics Blades of the Shogun is a stealth tactics game unlike any other

Hitman Absolution may not be the best Hitman game, but it’s the hardest one to sneak through