Mods / Custom Campaign

• RREBORNby FakostSaving humankind from an alien invasion is a common thing for our hero. Wounded countless times but never defeated, he surely knows how to deal with bastards from outer space. But this time, someone different will stand in his way, someone as powerful as the most serious man on Earth himself... W...12.3k downloadsupdated 12 mo ago
• UUnlandedby 76561198842066122Story and features As he returned from another failed mission, Sam Stone's helicopter is shot down and he is thrown from his seat. Wounded, but not defeated, Sam desires nothing more than to take his revenge against those that shot him down. Against all odds, Sam knows he should get to the neares...4.9k downloadsupdated 5 y ago
• MMystical Placeby 76561199040911078READ THIS! This is my first map in SS4, so please, don't be rude. I hope you enjoy it :D Information -This map will take 20 - 40 minutes. -4 Skill points! -6 Secrets around the map! -2 Side Quests! Prehistory Sam somehow appeared in this forest. I don't know how this happened but it was. Your mai...3.7k downloadsupdated 6 y ago
• AA Seriously Stupid Planet Badass Remasterby Seriously StupidSECOND PART REQUIRED: It IS HIGHLY RECOMMENDED TO DISABLE THESE MODS BEFORE PLAYING: PLEASE NOTE:This mod uses a few replacement files as well as files from SSHD TFE, HD TSE, SS3 and Fusion. Check and disable your workshop packages if you encounter unusual issues while loading the levels or durin...3.5k downloadsupdated 4 y ago
• CCrate Canyonby SkorlyThe sort of sequel to Container Castle that no one asked for is finally here! Fight your way through the Crate Canyon in order to get to the Crate Arena. Here you must fight a powerful foe. The map should take roughly 30-40 minutes to complete if you visit every area.3.3k downloadsupdated 6 y ago
• MMystical Place 2by 76561199040911078READ THIS! This is prequel of first part of Mystical Place. Hope you enjoy! Information -This map will take x2 time than first part. -6 Skill points! -10 Secrets around the map! -2 Side Quests! (NEW!) Music Peace Music - BaltaZzar - In the Dark Forest Fight music - (sorry, i forgot it) War Music...3.1k downloadsupdated 5 y ago
• TThe Sirian Star - WIPby StruppiDescription Welcome to The Sirian Star, a custom made campaign for Serious Sam 4. It tries to bring back the classic Serious Sam gameplay where you explore nice looking locations, become more and more powerful by collecting big guns and mow down lots of enemies within interesting designed encount...2.9k downloadsupdated 2 mo ago
• PPyramid of Prophecyby 76561199192948673Brutal Serious Sam? Or maybe Super-Brutal-Serious-Sam-from-the-future with a fancy beard? This mysterious hero has already appeared in the original story campaign, helping us in the most desperate moments. But how many of his exploits have remained hidden from humanity? Sam knows the truth, but a...2.8k downloadsupdated 1 mo ago
• CContainer Castleby SkorlyContainer Castle is single player map that is set in a strange, volcanic and unfriendly place where all the buildings are made of containers. Stuck inside the Container Castle itself, Sam "Serious" Stone must find out of this sticky situation, although Mental's minions and the recent volcanic eru...2.8k downloadsupdated 5 y ago
• AA Seriously Stupid Planet Badass Remaster (Part 2)by Seriously StupidSecond part of files necessary for ASSPBR. Download the first part here:2.4k downloadsupdated 4 y ago
• FFinal Solstice Campaign - Level 1: Crescent Starby NeiserUpdate Level 2 is out now! This map also received a small performance update (I doubt it's anything noticeable). Story Before the arrival of Mental's forces to Earth through the Tunguska portal, the EDF sent Serious Sam to find and stop the general in charge of the invasion. Now, it is up to Sam...2.4k downloadsupdated 4 y ago
• SSerious Sam 4 Italia Reworked (WIP)by MattStarChiefSerious Sam 4 Italia Reworked reworks the Italy chapter of the base game by speeding up the pacing, increasing the challenge of levels, and diversifying encounters. The idea of a fully reworked campaign has sadly been scrapped. Life is too busy and I can no longer dedicate the time necessary to c...2.3k downloadsupdated 4 y ago
• ((UPDATE 1) Mystical Place 3 - The Finalby 76561199040911078Update log: -Changed a picture of 3 level. -Added some decorations in 3rd level to make it more beautiful. -Fixed balance in 3rd level. -Some secrets in 3rd has been changed and changed location. -Bike in 3rd level now standing on visible place. Roads in 3rd level are wider (here you go, fiendzy)...2.3k downloadsupdated 5 y ago
• BBlackwater Cityby FinzyA custom campaign for Serious Sam 4 inspired by Ratchet & Clank! Story: In Solana Galaxy, Planet Rilgar has come under attack from Mental's forces. Captain Sam Stone receives a distress call and moves in to investigate. It seems the system's own defense forces are too busy at the moment, or so a...2.2k downloadsupdated 5 y ago
• TThe Sirian Star - WIP - Content Pack 1by StruppiDescription This is a content package for the custom campaign The Sirian Star. It is required to play the mentioned mod. Because of the great filze size, I had to split the content into multiple workshop packages. For more information, check out the custom campaign's main workshop page.2.2k downloadsupdated 5 mo ago
• TThe Quick Encounter - Custom Campaignby SkorlyThere's something seriously suspicious going on in the ruins. Someone has to take a good look at what's going on there. And that someone just so happens to be you, Serious Sam. Travel to the ruins, and take care of this nonsense as soon as possible. Fight through 6 relatively short, but action pa...2.1k downloadsupdated 4 y ago
• AAdventures Of Pesko - WIPby MarkoJPlease be aware of the following changes: 1. No Further Updates:There will be no additional updates of patches released for "Adventures of Pesko". The current version available on the Steam Workshop will be the final iteration. 2. Technical Support: Unfortunately, I won't be able to provide ongoi...2.0k downloadsupdated 5 y ago
• FFrenchieby RoosevWARNING!: Survival Scoring is not "required" for the map to work, however it will fix HUD issues. Frenchie is a French Countryside-themed Survival Map that is playable on both Solo and CO-OP. Features: 13 Waves + The Endless Mode. Multiple secrets that can aid you in your fight for Survival. Cust...1.8k downloadsupdated 4 y ago
• FFinal Solstice Campaign - Level 2: The Grand Forestby NeiserUpdate I'll be putting this campaign on hold indefinitely. I'm not sure if I'll ever finish it. I can't afford the time right now to make more maps :( I hope you enjoy the maps I've made :) Story After your ship was shot down by a mysterious watchtower, you got to work on mowing down Mental’s min...1.6k downloadsupdated 2 y ago
• DDesertedby Roosev(I have recently added resources to this map. MAKE SURE YOU HAVE SUBSCRIBED TO THESE RESOURCES! Otherwise, big bang, or crash I guess...) A classic map makes a return! Consider this a "remaster" of an old classic... inside of SS4. Features: A fully functional Sirian Bracelet is back! Random music...1.6k downloadsupdated 4 y ago
• FFEUDAL CHINA 2025by FakostWelcome to the Feudal China - the second episode of Serious Sam Next Encounter. Now in hi-res, with fancy 2k textures, bigger guns and new combat encounters. But only 3 levels - 3 fully remastered Feudal China levels: Monkeys of Juyongguan HD™, Jiayuguan Fortress Reawakened™ & Dunhuang Oasis Rebo...1.5k downloadsupdated 17 mo ago
• MMental's Factoryby serious bomb背景介绍(Level) 在Mental入侵地球不久后，Mental的军队在地球上建设了很多工厂，其中包括但不限于武器工厂，生物改造工厂，资源工厂。。。某天萨姆乘坐前往任务地点的飞机遭到了大范围的能量波攻击，导致飞机坠毁，萨姆很幸运的掉进了某个Mental工厂前哨站附近的水池中，战斗就此打响。 Not long after Mental invaded Earth, Mental's army built many factories on Earth, including but not limited to weapon factories, biological modificati...1.5k downloadsupdated 2 y ago
• SSSHDWeapon&Item_CompletePack(Resource)by serious bombSSHDWeapon&Item_CompletePack(Resource) -This package contains SSHD weapons and items, including HD style weapons, HD style health, HD style armor, and HD style bullets. -The weapon has been adapted for Sam 4, and players can call HD weapons and corresponding upgrade accessories through NRM. The a...1.4k downloadsupdated 12 mo ago
• CCrash Courseby Roosev(MAKE SURE TO DOWNLOAD THE REQUIRED RESOURCES! ...OTHERWISE BIG BANG!) Yes, it was bound to happen. Fully remastered and filled with brand new content! Crash Course is a survival map that had previous iterations (most notably SS3 and SS:Fusion), originally under the names "The Last Chance" and "C...1.3k downloadsupdated 5 y ago
• PPalenque Demo:Remasteredby 76561199068533130Oh my god, it's the old good Palenque Demo or Brother Karnak Demo. I just wondered how this level would look and play on the Serious Sam 4 Engine and thanks to its capabilities to add various features. At least something normal I released after my madness, but I think it won't last long. I don't...1.2k downloadsupdated 9 mo ago
• AAlternate Way - Mystical Place 3 (DLC) / Part 3by 76561199040911078About An alternate universe in which you slightly changed your path to France. Will this path be shorter? Or will you have to stray longer than in the original? Find out after passing. Thanks to everyone who waited, who supported my projects with points, nice comments, and especially video walkth...1.2k downloadsupdated 4 y ago
• AAlternate Way - Mystical Place 3 (DLC) / Part 2by 76561199040911078About An alternate universe in which you slightly changed your path to France. Will this path be shorter? Or will you have to stray longer than in the original? Find out after passing. Thanks to everyone who waited, who supported my projects with points, nice comments, and especially video walkth...1.1k downloadsupdated 4 y ago
• AAlternate Way - Mystical Place 3 (DLC) / Part 1by 76561199040911078About An alternate universe in which you slightly changed your path to France. Will this path be shorter? Or will you have to stray longer than in the original? Find out after passing. Thanks to everyone who waited, who supported my projects with points, nice comments, and especially video walkth...1.1k downloadsupdated 4 y ago
• DDEATH FROM CRINGE / Custom ReTraMade campaignby 76561198882711238Here is the first level I modified. A bit of crazy, half quite a good remake. The cut scenes have also been updated. So that the passage does not cause difficulties, carefully explore EVERY corner of the map. Enjoy. The signs will tell you.... (But think for yourself, too) Hotfix № 1 - Scrapjack,...739 downloadsupdated 6 y ago
• TThe Package (Oil Rig) - Remasteredby 51umutThe Package (Oil Rig) - Remastered I used the editor for the first time and decided to do a stupid remaster of Oil Rig. !Danger! If you have the problem that the map is not activated for you, you have to play the single player campaign beforehand, otherwise you can activate the map via the consol...714 downloadsupdated 5 y ago
• EEgypt Adventuresby 76561199446449493EGYPT! AGAIN EGYPT?!! Seriously serious egypt comeback! Lore:Mental has awakened one of the sleeping volacones in the Egypt. Your mission is to find water element and prevent Egypt from being destroyed by lava. Huge thanks to Fakost for helping me with editor All credits are in the game P.S If yo...615 downloadsupdated 11 mo ago
• XXmas Spiritsby Zero MadManXmas is Here! Get ready this is will get serious! Defeat Spirits of the Past to celebrate New Year! Face enemies what you never face before. --------------------------------How i ended up here/Как я до этого дошел---------------------------- While working on Serious 3 mod i decided to celebrate N...566 downloadsupdated 4 y ago
• SSSHD Monsters SuperPackage(Resource)by serious bombSSHD Monsters SuperPackage(Resource) SSHD's enemies and their extended enemies This also includes some enemies in the revolution, such as various elemental monsters, GimzoSpawnerWalker The file includes a MonsterTest.wld file,creators can learn how to use the splitting of elemental monsters and t...563 downloadsupdated 12 mo ago
• AAnime Game Character Packby serious bombCharacter List GENSHIN IMPACT ◆Chevreuse ◆Clorinde ◆Dehya ◆Escoffier ◆FischlPrincess ◆Furina ◆Ineffa ◆Jahoda ◆KukiShinobu ◆Mavuika ◆Navia ◆Nefer ◆QianZhi ◆Yoimiya HONKAI: STAR RAIL ◆Stelle ◆Cyrene ◆Firefly ZENLESS ZONE ZERO ◆Nnmber 11 ◆Anby ◆Ling ◆Vivian-Swimwear GIRLS' FRONTLINE 2: EXILIUM ◆Cent...555 downloadsupdated 10 mo ago
• SSS4:Operation TimeBreakby 76561199192948673NOW COOP UPDATE!!! ENG: SERIOUS SAM: TIMEBREAK "Sometimes to save the future… you have to destroy the past." A journey through broken time awaits you: • The beginning is in the ruins of ancient Rome • Sudden teleports to the desert and other eras • Time instability constantly changes locations •...516 downloadsupdated 15 mo ago
• UUniverse That Never Existed [SP, COOP CAMPAIGN]by DizellfestTry not to trip {PROJECT UNIVERSE} A psychedelic journey with no purpose. Just developer testing it's abilities to create something deeply colored, as well as checking how lightmaps work without terrain on Serious Sam 4's Engine. [GAMEPLAY} Linear style, there are no main characters in this world...488 downloadsupdated 2 y ago
• DDead Eddy's Squad: Revisioned [Custom Story Campaign]by DizellfestEddy and his squad showing no mercy to those who oppose them. Tasked to bring the Leviathan (Mental's Harvester Ship) to Zone 6 Facility for researching purposes. Things don't go as planned. Although the squad is ready for anything. While rest the story will be told on how their destinies will sh...480 downloadsupdated 3 y ago
• DDark Side Of Persian Mechanism: Revisioned - Campaignby DizellfestYou are the creation of time. FEATURES 6 Levels (Level 1 is an Intro) AI PNA Support (Requires Project Never Alone in order to play with AI Bots) Custom Soundtrack Nostalgic TSE's Persia Theme Unique Boss Battle (The Mechanism Itself) INFORMATION Difficulty: Hard (May be Mediocre for seasoned pla...477 downloadsupdated 6 mo ago
• EEnemyPack Arachnoid-Scrapjackby serious bombEnemyPack Arachnoid-Scrapjack Arachnoid: --Arachnoid-Laser --Arachnoid-Devastator --Arachnoid-PlasmaCracker --Arachnoid-SlimeShooter --Arachnoid-Electricity --Arachnoid-Zealot --Arachnoid-Flamer Scrapjack: --Scrapjack-Cannon --Scrapjack-Grenade --Scrapjack-FireBall Note Because I cannot post comm...428 downloadsupdated 14 mo ago
• OOctanian Turret Resource Packby serious bombOctanian Turret Resource Pack UpDate Note: --Add 5 New Turrets --Fixed the issue where turrets might fly away Ground Turret: --Cannon Turret --Grenade Turret --Devastator Turret --Flamer Turret --Rail Laser Turret --Rocket Turret --Minigun Turret --Shotgun Turret --Plasma Cannon Turret --Mine --E...409 downloadsupdated 5 mo ago
• BBeheaded-Harpy EnemyPackby serious bombEnemyPack Beheaded-Harpy Beheaded: --Beheaded-SuperBomber --Beheaded-SuperRocketeer --Beheaded-Plasmacracker --Beheaded-MiniKamikaze --Beheaded-SmartRocketeer --Beheaded-FireBomber Harpy: --FireHarpy --WaterHarpy --ElectricityHarpy Updatenote --Fix beheaded use wrong wound animation --Fix Harpy b...408 downloadsupdated 12 mo ago
• SSS4: TimeBreak: Ancient Eraby 76561199192948673ENG: SS4: TimeBreak: Ancient Era After the end of the first map (TimeBreak), a helicopter arrived and evacuated Sam. His destination was the city where a hidden portal leads directly into Mental’s laboratory. However, on the way there, the helicopter was struck by a powerful blast wave. The pilot...404 downloadsupdated 15 mo ago
• WWay to the templeby 76561199446449493EDF is sending Sam back to Feudal China, because strange signals are coming from the Lightning Temple. What could it be...? All credits are in the game396 downloadsupdated 3 mo ago
• SSS4:GalaxyRoyalby 76561199192948673ENG: Serious Sam: Galaxy Royale it's fun made mup, with hard gameplay but i think he's fun. In this mup you will explore the parallel universe and destroy ord of MENTAL in Earth. You must be destroy all the aliens. After you were landed on an island controlled by monsters, you started to advance...391 downloadsupdated 19 mo ago
• BBiomeches SeriousPackage(Resource)by serious bombPackageVersion: v1.5 Biomeches: --MiniGunner Biomech --ShotGunner Biomech --Destroyer Biomech --Flamer Biomech --RedLaser Biomech --Slime Biomech --PlasmaRocketer Biomech --LavaLauncher Biomech --FireBall Biomech --Cannon Biomech --MagicLauncher Biomech --Electricity Biomech --Spawner Biomech --A...385 downloadsupdated 5 mo ago
• RRealColdMapby 76561199192948673______________________________________________________________________________________________ ENG: On this map, you will visit an abandoned research base in Antarctica. How did Sam end up there?? Nobody knows. there are rumors that after he was in the bar, someone moved him to Antarctica. Howeve...366 downloadsupdated 2 y ago
• AA Mountain Trip (Full campaign)by id.dav81It's now time to take a trip to mountains. Sam is tasked to clear the surroundings of important highway by starting in countryside area and moving deeper into mountains. This 3 chapter campaign is kind of reimagining/continuation of France episode, but this time we reach mountains that was seen f...361 downloadsupdated 9 mo ago
• CCastle In The Snowby serious bombCastle In The Snow An ancient castle, a snowfield pierced by biting wind, a trial awaits; your former enemy is waiting for your arrival in the final cathedral. Are you capable of completing this challenge? Description Coop Map This map is designed for Coop Mode, with enemy numbers exceeding 7,000...319 downloadsupdated 5 mo ago

53 custom campaign mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.