Mods / Custom Campaign

• HHollywood Holocaustby SyndroidSerious Duke 3D level 1. For more information on Serious Duke 3D and links to the other levels; check out the mod's collection page. Features | Notes: - Total Conversion, custom gametitle. - Weapons and enemies from DNF, redesigned & animated to look closer to Duke 3D. - VR compatible - additonal...36.0k downloadsupdated 4 y ago
• RRed Day: Episode Oneby DeadkadathRed Day: Episode One is a custom campaign that tell you a story about war against Mental's Horde in Russia. ⋆ MOD OF THE MONTH on croteam.com: ⋆ FEATURED MOD on Serious Sam Fusion news: Storyline It's two years after Mental's invasion and what you expect? Egypt? Nah. Welcome to Russia, a typical...15.8k downloadsupdated 7 y ago
• BBFE Enhancedby BiomechanoidNow available for Serious Sam Fusion. BFE Enhanced is a custom campaign that aims to bring back the classic SS1 action and feel to the BFE campaign. This new version of BFE Enhanced features updated models, retweaked enemy spawns in some sections, better looking levels, more secrets and new power...13.1k downloadsupdated 5 mo ago
• AA Seriously Stupid HD Remaster (Part 4/4)by Seriously StupidContent files required for running A Seriously Stupid HD Remaster. Make sure you also have Parts 1, 2, and 3 subscribed to, along with all of its required items before downloading. Part 1 can be found here: Part 2 can be found here: Part 3 can be found here: Part 4 contains: - Textures9.6k downloadsupdated 6 y ago
• AA Seriously Stupid HD Remaster (Part 3/4)by Seriously StupidContent files required for running A Seriously Stupid HD Remaster. Make sure you also have Parts 1, 2, and 4 subscribed to, along with all of its required items before downloading. Part 1 can be found here: Part 2 can be found here: Part 4 can be found here: Part 3 contains: - Textures9.6k downloadsupdated 6 y ago
• RRiverdance 2017by DeadkadathWelcome back to 2005! Take a walk along the sunny beach, kick some asses of these ugly one-eyed freaks and save Simbas's village from Mental's invasion! ❂ The "Riverdance" level from Serious Sam 2 now in Serious Sam Fusion 2017! ❂ Significantly improved visuals and atmosphere ❂ Old good secrets (...9.0k downloadsupdated 6 y ago
• SSeriously Retro : Karnak 1996by Dom" Seriously Retro : Karnak 1996 " is a total-conversion for Serious Sam Fusion 2017 Styled after the First Person Shooters of yester-year, this modification aims to revisit the iconic Karnak Temple complex from Serious Sam : The First Encounter. Not everything is as it seems, however - even seaso...8.9k downloadsupdated 6 y ago
• RRemastered Enemy Resource (Fusion) 2017by Spy's Cr3edRemastered Enemy Resource (HD) 2017 is a pack of enemies that mappers can use to their levels.Now it's port and available to Fusion ! Video Demonstration by : Soulmyr from the previous version .:Updates:. .:V1 Original:. *Beheaded WaveBlaster's electricity projectile is visible *Cucurbito Bone Co...7.9k downloadsupdated 9 y ago
• SSerious Sam: [Operation Frostbite]by ChrysalisSerious Sam: Sam's next operation is taking place in Siberia. His aim is to eliminate one of Mental's most dangerous commanders - Borok, who's known for his combat and surviving skills. Searching for his lair won't be easy, though. That's why Sam will be assisted by Alien, an operator who's succe...7.7k downloadsupdated 4 y ago
• BBR 2021: Cells Interlinkedby SyndroidA total conversion mod set in the Blade Runner universe. The story takes place before the events of short film: Blade Runner: Blackout 2022 and centers around Trixie, an escaped replicant battling for freedom in a world where she is forced to obey. Trixie is a prototype Nexus 8 replicant. Before...7.2k downloadsupdated 6 y ago
• SSerious Sam BFE : Devolvedby DomAbout the mod "Serious Sam BFE : Devolved" is a Campaign for Serious Sam 3 : BFE that focuses on devolution. The aim is to make the game's flow and pacing closer to the Classics', while maintaining BFE's gritty style. Devolved weapons, Devolved levels, Unmatched action - this is Serious Sam at it...5.9k downloadsupdated 6 y ago
• MMuhosranskby DeadkadathMuhosransk - the true Valhalla for the gopniks! Take the minigun and do the usual thing - mass killing of alien minions of Putin's Horde! ☭ A composite image of a typical russian provincial town! ☭ Incredible soundtrack: "XS Project - Bochka, Bass, Kolbaser". Get hardbassed! ☭ Absolute freedom -...5.3k downloadsupdated 8 y ago
• TThe 7Smoke Tennis Project 2018: Blue Edition [SP/COOP]by noam 2000INTRODUCTION Presented to you by members of the Seven Different Kinds of Smoke community: this is a custom campaign ten levels long made by ten different contributors - every level made by a different creator, but with one overarching thematic and storyline. Every mapper makes use of their own le...5.2k downloadsupdated 7 y ago
• UUrsul Suburbs 2020by DeadkadathRemastered Serious Sam 2 level. It was great in 2005, but now it's gonna be serious! Welcome to Ursul Ursul - the legendary city of M'digbo planet. To find the first part of the Mental Medallion, you must free the Simba shaman from the Kukulele prison! Battle your way through the city of the whit...5.2k downloadsupdated 6 y ago
• AA Seriously Stupid HD Remaster - Alternate Editionby Seriously StupidNOTE: THIS ADDON IS NOT REQUIRED TO RUN THE BASE VERSION OF ASSHDR, THOUGH SAID ADDON WILL REQUIRE ASSHDR + OTHER LISTED ITEMS TO WORK This is the Alt Pack for A Seriously Stupid HD Remaster. What this changes are the look/aesthetics of all the levels to be a bit different. Functionally, it's a s...4.9k downloadsupdated 4 y ago
• RRealm of Despairby DeVoUPDATE: Version 1.196 -Recreated Visibility Version 1.195 -Remade Crystal Shader Version 1.19 -Added fixes made by Solais due to recent Patch Version 1.16 -Changed Klodovik version from Default to BFE Version 1.15 -Fixed 2 of the bosses having music from my unfinished music remaster, sorry about...4.7k downloadsupdated 8 y ago
• SSSNE Remastered Weapons Resourceby Spy's Cr3edSSNE Remastered Weapons Resource, a huge weapons port from game Serious Sam: Next Encounter port to SSFusion. .:Features:. - All Weapons included - New Sounds Included - New Animations Included - Netricsa message Included - Minimal errors & warning messages ( Not found ) .:Location:. You can foun...4.7k downloadsupdated 9 y ago
• AApproaching Hell: Extended Editionby BiomechanoidApproaching Hell is a custom campaign created by NHunter that aims to be a prequel to Serious Sam 3: BFE. The Extended Edition not only includes fixes, improved lighting and some tweaked spawns, it also includes the fifth level of the campaign. And if you're wondering, yes I did get permission fr...4.6k downloadsupdated 8 y ago
• SSaving Private Pesko: Remasteredby MarkoJPlease be aware of the following changes: 1. No Further Updates:There will be no additional updates of patches released for "Saving Private Pesko: Remastered". The current version available on the Steam Workshop will be the final iteration. 2. Technical Support: Unfortunately, I won't be able to...4.5k downloadsupdated 6 y ago
• TThe 7Smoke Tennis Project 2018: Red Edition [SP/COOP]by noam 2000After the 7Smoke Tennis 2018: Blue Edition, comes the second half of an expansive and ambitious Serious Sam custom campaign – the 7Smoke Tennis 2018: Red Edition! Powered by the creative collaboration of 10 Serious Sam mappers, 16 voice actors, three artists and more – the 7Smoke Tennis 2018: Red...4.4k downloadsupdated 5 y ago
• SSerious Sam HD: BFE (SP/COOP)by BiomechanoidSerious Sam HD: BFE is a custom campaign that gives the SSHD levels a BFE coat of paint, to say the least. This mod originally started off as a joke mod that overly desaturate the colors (to poke fun at BFE's more desaturated color scheme) and adds in ClearBlueSky skyboxes and midday lighting to...4.4k downloadsupdated 2 y ago
• WWinter Wonderland -- Campaign (2023 Update)by Spy's Cr3ed[.:--:2023 Update:--:.] Christmas and New Year are coming so it's time to replay bunch of festival-themed maps! Thanks to everyone who have made walkthrough videos or directly gave a feedback, this really helped to see what could have been done better. * Besides bug fixing there's lots of visual...4.3k downloadsupdated 3 y ago
• PPlastic Patrol 2: Replastered (Campaign)by PanAfter saving the family home from a tan invasion - the Green army rests and waits for their owner to build a new Crystal Tower. But little did they know that the world has seen what toys can do! It's 2017 and WAR - a brand new hit TV Show - pits Toys against each other in real world locations wit...4.3k downloadsupdated 7 y ago
• AAdventures Of Pesko FUSIONby MarkoJPlease be aware of the following changes: 1. No Further Updates:There will be no additional updates of patches released for "Saving Private Pesko: Remastered". The current version available on the Steam Workshop will be the final iteration. 2. Technical Support: Unfortunately, I won't be able to...4.1k downloadsupdated 8 y ago
• KKMC1: Crystal Impactby ThanadraxThey are calling Welcome to the Khreth Mapping Challenge 1: Crystal Impact - a project, which is the result of the year of work of 17 participants from the slavic community Khreth. The Challenge rules are simple - each participant must continue the map of previous one with their level, having onl...3.5k downloadsupdated 13 mo ago
• RReturn To Hatshepsutby [-:-]HarbingerAnother SP/COOP Map for Serious Sam Fusion, this place looks familiar don't it? Well its kinda inspired by its Alpha Incarnation, but different with a New Boss waiting below!3.2k downloadsupdated 7 y ago
• TTrash Samdicoot Warpedby FinzyTrash Samdicoot is a full-on platforming campaign for Sam Fusion, with the goal to mock the gameplay of Crash Bandicoot in a Serious Sam universe. Mental and Dr. Cortex have joined forces with the TimeLock technology, and it's up to Sam and Crash to retrieve all the power crystals from different...3.0k downloadsupdated 6 y ago
• EEaster Islandby DeadkadathWelcome to Easter Island! Are you ready for an epic and explosive survival among the famous idols of Rapa Nui? Are you ready to kick some alien asses? No? Why?:( Survival map, 1-8 players ✫ Gold: 5:30 ✫ Silver: 4:30 ✩ Bronze: 3:30 Background music: Damjan Mravunac - The Last Breath (SSVR: The Las...3.0k downloadsupdated 8 y ago
• PPlastic Patrol (Custom Campaign)by PanPlastic Patrol is a custom campaign for Serious Sam 3. Take the role of an Action Figure, hired by the Green Army Men forces, to fight back the opposing Tan Army. Fight through out a house, sandbox and medieval dioramas in this new 5 map long campaign. Featuring all new enemy types, NPC allies an...3.0k downloadsupdated 7 y ago
• TThe Netherby NekorieA loose interpretation of Minecraft's "Nether" with some elements and ideas from other games (mostly Terraria). This level contains 4 new enemies (and one of them has 3 different types) and a new boss. This campaign also has Netricsa messages so if you don’t know where to go just read them :p Ima...3.0k downloadsupdated 6 y ago
• TTrash Party BFEby SeriousVovanTrash Party BFE - Это лютый пиздец разработанный больным разумом объединения трёх мапперов "Tripple~V" Изначально мод разрабатывался как локальный проект, но потом было решено переработать всю кампанию, и открыть это произведение для комьюнити. Так что готовьте тазики, будет очень блевотно Здесь...2.9k downloadsupdated 7 y ago
• ((TSE) The Forgotten City - Fusion Versionby SolaisMy very first released project, made in 2010. Took 10 months to create, this mappack is a huge campaign of 5 levels, new enemies and a lot of secrets. This new Fusion port includes a few changes and fixes, which include: - SSHDX-era Custom Enemies - Custom Weapons from around the workshop for a d...2.9k downloadsupdated 8 y ago
• TThe Grand Obelisk Enhancedby BiomechanoidThe Grand Obelisk Enhanced is a heavily improved and edited version of Croteam's The Grand Obelisk map from the Legend of the Beast DLC. Now available for Serious Sam Fusion. This new version of The Grand Obelisk Enhanced features better lighting effects, new enemy placements in some sections, a...2.8k downloadsupdated 6 mo ago
• BBroken Wings Demo Remake (SP/COOP)by BiomechanoidA recreation of the Broken Wings demo level from the Xbox 360 version of Serious Sam 3: BFE. Also includes a new custom revised version that aims to be a better, more refined version of the map with different lighting, secrets, spawners (with more noticeable changes in each difficulty level), and...2.8k downloadsupdated 6 y ago
• TTFE Suburbs [Full Remake]by ДEГEHEPAЛ ПPOCTOEБЛИHRemember the Suburbs, the next level after the Dunes? Didn't you ever think they were too small? Not anymore! I present you a complete map made from scratch, which is a complete reimagining of that level with almost intact atmosphere and new combat dynamics! Go to different places in the same sub...2.7k downloadsupdated 6 y ago
• BBullets and Blood 2.5by ThanadraxThe Mod might conflict with game-changing modifications such as CWM You need Essential Fusion Fixes mod only if you keep getting "Unable to load level" error due to lack of Batched particles This is a 3-5 hours long map with more than 10000 enemies, in more of "slaughter" style like in Classic Do...2.7k downloadsupdated 4 y ago
• GGreen Planetby AlfeosThe Second Encounter Continues! Fate throws Sam into the unexplored world of the mysterious Green Planet. What trials await our hero in these exotic jungles and ancient temples? Prepare your cannons — a brand-new journey begins now! Features New Chapter: A story-driven map that picks up right whe...2.7k downloadsupdated 2 mo ago
• MMore Organised Menuby IAmSympathyHave you ever said to yourself "I'd really want to install plenty of custom campaigns at the same time but if I do they won't be sorted out and they are gonna be hard to find."? Well if that's the case, this mod is for you ! Maps in the "Default Campaigns" category are the base campaigns. Maps in...2.7k downloadsupdated 18 mo ago
• ((SP/COOP) TSE Ultimate: Medievalby Mordecai and the KobokerzHello guys, i am back with my Ultimate series, Welcome to TSE Ultimate mod that changes everything, Now on Fusion Only one Map and areas that are ported from Curse of the dark citadel - Darkvale Village made by Sharkcat Abandoned Empire by Jester Of Destiny However due to new levels that are made...2.6k downloadsupdated 7 y ago
• SSerious Horsam: Fusion [SP/COOP]by noam 2000He's back, he's mad, and he really tastes like raisins! Serious Horsam is a comedic 'lowest effort as possible' SP/COOP mod that I originally made in early 2013 and expanded upon in later years. Thanks to a very high demand for a Fusion port, I've poured a lot of time and effort into narrowing do...2.6k downloadsupdated 2 y ago
• ((SP/COOP) TSE Ultimate: Persiaby Mordecai and the KobokerzHello guys, i am back with my Ultimate series, Welcome to TSE Ultimate mod that changes everything, Now on Fusion Maps that are ported from Journey to Hell 2 - To Hell and Back made by Maska Crystal gates by R"M1strz Mistrzów However due to new levels that are made, this mod will be divided into...2.6k downloadsupdated 7 y ago
• AAround the World Part 1 - The Cityby Neo_miniganYou wake up in the city and keep in mind that you need to get back to Egypt for the ancient artifact. With it you will be able to awake the monster before Mental take control of it. You will need to get on the only train in metro to get to Egypt. Why for? Of course, for killing monster! Map featu...2.6k downloadsupdated 8 y ago
• EE1M1 - Wolfenstein 3D [SP/COOP]by tensor algebraAchtung! The legendary first level from Wolfenstein 3D has now come to Fusion! Ported as a fully-fledged ~5 minute SP/COOP level, E1M1 tries to remain as faithful as it can get to the original. And yes, that means, proper weapons and billboarded sprites/enemies! And to top it all off, you can fin...2.5k downloadsupdated 8 y ago
• OOPERATION "The Sunrise" Classic [Singleplayer/Cooperative Campaign]by UrbanDeHumanHappy April Fools Day! This is Operation "The Sunrise": Vol. 1 from Serious Sam 3: BFE - ported to Serious Sam Fusion 2017. Particularly the very first version of Operation "The Sunrise" - just one level without any color correction or major fixes, as it was released back in August 18th, 2015 - r...2.4k downloadsupdated 7 y ago
• ((SP/COOP) TSE Ultimate: South Americaby Mordecai and the KobokerzHello guys, i am back with my Ultimate series, Welcome to TSE Ultimate mod that changes everything, Now on Fusion Maps and map parts that are ported from Curse of the dark citadel - Cemetary made by Sharkcat I am sorry for removing this, this was by mistake when i am releasing the Medieval episod...2.4k downloadsupdated 7 y ago
• EException 2 - Cyberspaceby FinzyAfter their previous clash, Netricsa is damaged beyond repair, and Sam finds himself stuck inside a weird, surreal cyberspace. What really is this place? Is everything as it seems? Sam must piece together the answers... This campaign is a continuation of the Exception mappack for SS3:BFE. Current...2.3k downloadsupdated 8 y ago
• OOrphans of Castle Paccatumby ThanadraxWelcome to Castle Paccatum. In the year 2110, Sam "Serious" Stone was sent by EDF HQ to a recently discovered location in Europe for a top-secret operation. The main objective is to find and rescue any remaining EDF survivors in the Fields of Paccatum. The primary issue is its' superstitious repu...2.3k downloadsupdated 8 y ago
• [[SP]Serious Jumping Tour: Season 1by ThanadraxWARNING: DO NOT SAVE&LOAD. REPLAY EACH LEVEL FROM BEGINNING. Welcome to the Serious Jumping Tour: Season 1! It's a singleplayer campaign, where you have to complete multiple objectives, like... - Jump - Jump - Kill - Jump - Run - Jump! Also some collectibles. Contains lots of parodies on such map...2.2k downloadsupdated 3 y ago

188 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.