The1990ssaw an explosion in first-person shooter titles. Inspired by id Software’s big three –Doom,Quake,Wolfenstein 3D– developers knew they wanted to get in on the action with their own titles, and this surge of imitators swiftly grew into a genre that remains popular to this day.

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With a few exceptions likeGoldeneyeorDisruptor, most of these 90s shooters began their life on PCs, but unlikeDoomwhich has since been released on everything, there are several titles thatnever saw a port to a console and remain locked to PC. Despite this, many of these exclusive titles are still worth revisiting today.

10SiN (1998)

WhileQuakeand its sequel are ineligiblefor this list, especially as they were recently re-released for every modern console, there are a couple of games built onQuake II’s engine that never got the same port treatment.

SiNis a dystopian sci-fi shooter, set in a futuristic megacity, where the player is a security officer trying to tackle the rise of a new recreational drug.SiNwas also ambitious and brought many new features to the genre, such as the ability to disarm enemies, branching levels, and a system that allowed enemies and the player to take damage to specific parts of the body.

Sin

9Kingpin: Life Of Crime (1999)

While a lot of FPS games from the 90s took place in sci-fi environments, maybe with a sprinkling of fantasy here and there, Kingpin took the genre somewhere different. Taking inspirations fromPulp Fictionand blending them with 1930s art deco visuals and a soundtrack by rap group Cypress Hill,Kingpinwas a gangster movie turned into a game.

While attracting controversy due to its release close to the Columbine Massacre,Kingpinnonetheless found an audience due to its gritty setting, excellent level design and shocking story beats.

Kingpin Life of Crime

8Hexen 2 (1997)

While the originalHexengot a release on all the major fifth generation systems, its sequel never saw a port. A dark fantasy FPS,Hexen IIlets the player choose between four unique classes – the paladin, the crusader, the necromancer and the assassin – and then unleashes them on four themed environments to take down the final Serpent Rider enslaving the world.

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Hexen-2-1

Hexen IIutilised an experience system that strengthen the players health and mana as they progressed, some brutally hard puzzles, and a range of environments and weapons that pushed theQuakeengine to its limits with some impressive level design and texture work.

7Blood (1997)

UsingDuke Nukem 3D’s Build Engine,Bloodtook a different direction to that game. Full of gruesome horror aesthetics and a storyline revolving around occult themes,Bloodstarred an early 20th century gunslinger battling dark gods.

Bloodplayed a lot likeDoombut added a grim gothic visual style and the ability to use secondary attack modes on all its weapons, which included dynamite, an aerosol can flamethrower and a voodoo doll. All of this plus its brutal difficulty made it a cult classic and one of the major Build Engine titles.

Blood

6Shadow Warrior (1997)

Taking the cheesy sense of humor (and engine) ofDuke Nukem 3Dand giving it an Asian aesthetic,Shadow Warriorwas a fun and over-the-top romp. It was also ambitious, bringing advancements such as vehicles, ladder climbing and turrets to the genre. It also features a final boss fight against a mecha samurai, just to illustrate how goofy it got.

It’s a game that persists to this day. The rights toShadow Warriornow belong to Devolver Digital, who rebooted the franchise in 2013, and this yearsaw the release ofShadow Warrior 3, the second sequel to that reboot.

Shadow Warrior

5Unreal (1998)

Epic Games are known today as the publisher behind the juggernaut that isFortniteand for their PC storefront. They’re also well known for the Unreal Engine, an industry-spanning engine currently on its fifth version andconfirmed to be the basis of many upcoming games.

That engine gets its name fromUnreal, the FPS that it was originally built for. The player takes on the role of a prisoner whose transport ship crash-lands on an alien planet full of mysterious ruins and installations, all populated by the violent alien race, the Skaarj. WhileUnrealwould only get one sequel, its popularity did spawn theUnreal Tournamentfranchise and Epic’s first forays into live service gaming, so it remains an important title.

Unreal

4Aliens Versus Predator (1999)

There have been manyAliengames released across various platforms, including other FPS games in the 90s that did get console releases, such asAlien Trilogyor the tie-in game forAlien Resurrection.Aliens Versus Predatoris up among the best of the series, but only ever saw release on PC and Mac.

Aliens Versus Predator offered up three separate campaigns, allowing the player to be the titular Alien or Predator, as well as the option to be a Colonial Marine. It was praised for its inventive mechanics that differentiated the three campaigns and its tense, spooky atmosphere. Worth a revisit now withan upcoming release schedule full of sci-fi horror games.

Aliens Versus Predator

3Star Wars: Jedi Knight: Dark Forces 2 (1997)

While its predecessor,Star Wars: Dark Forces, saw a release on the original PlayStation,Jedi Knightstuck to Windows exclusively. Set after the original movie trilogy, players take control of Kyle Katarn, a mercenary for the New Republic.

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Three major aspects madeJedi Knightstand out above its predecessor. The first was a multiplayer mode, allowing LAN-based competitive battles. The second was the introduction of Force powers, up to and including the ability to wield a lightsaber. Finally, the game features a branching story depending on whether Kyle follows the Light or Dark Side of The Force, allowing for different endings.

2System Shock (1994)

It’s not entirely accurate to simply callSystem Shocka shooter. The player is a hacker on a space station, going up against the murderous AI SHODAN, and while the game uses a first-person combat system similar to many shooters, a number of additions elevated it to something much more.

Using mechanics from the team’s previous work on theUltima Underworldgames and a non-linear approach to level design,System Shockwas a ground-breaking game in many ways, and would help define the immersive sim genre, directly inspiring the likes ofThief,BioshockandDishonored. The game remains a beloved title, which is why a remake is currently in the worksready to introduceSystem Shockto a new audience.

Star Wars Dark Forces 2

1Team Fortress Classic (1999)

Originally developed as a mod forQuake,Team Fortressbecame a full game under Valve to help promote theHalf-Lifedevelopment kit. A team-based shooter with different player classes, all with different unique abilities,Team Fortress Classicwould go on to become one of the most popular and critically acclaimed shooters of 1999.

This critical acclaim would lead to a sequel. Originally bundled as part ofThe Orange BoxalongsideHalf-Life 2: Episode Twoandthe now-classic puzzle gamePortal,Team Fortress 2still has players today as Valve keeps the PC version regularly updated.

System Shock

Team Fortress Classic