Mods / Additions

• NNetwork script resourcesby NSKuberThis is a pack that adds "Content/Shared/Scripts/Network.lua" from TLH into Fusion and changes "WorldScripts.lua" to execute it. This enables the use of Remote Procedure Call (RPC) - new feature that gives script makers the ability to create functions that can be called over network. Also adds tw...61.6k downloadsupdated 2 y ago
• DDeath Rowby SyndroidSerious Duke 3D level 3 (of 5) Duke has been captured and the aliens are about to fry him on the chair. Fight your way out of the prison and meet Bombshell (singleplayer mode only). If you choose to free her, she will fight along with Duke against the enemy forces. Notes: - requires the first 2 m...31.0k downloadsupdated 4 y ago
• TToxic Dumpby SyndroidE1L4 After boarding the submarine at the end of Death Row, Duke has finally escaped from the Prison. Duke didn't realize the aliens had booby trapped the submarine and by the time he did it was already too late. Duke will have to escape the sub and explore a waste processing facility and various...30.5k downloadsupdated 4 y ago
• TThe Abyssby SyndroidThe final level of the Serious Duke 3D campaign. - comes with new enemy types and weapons. - major changes over the original E1L5 with a variety of different locations and enemy encounters. - takes around 50 minutes to complete. Note: Coop not fully supported at this time. Music credits: Resomat...27.5k downloadsupdated 4 y ago
• CCustom Weapons Managementby NSKuberDESCRIPTION In Fusion, modders are able to create their own weapons without replacing existing ones. There is a small issue though, if you want to actually use added weapons, you need to have a map which contains this weapon and ammo for it, because already existing maps will have same weapons pl...23.8k downloadsupdated 4 y ago
• ((SS3) Ultimate Resource Pack (Fusion Version)by SolaisUltimate Resource Pack from Serious Sam 3. (Fusion Version) Mapper's resource pack for Serious Sam 3, now ported to Fusion, by Solais, viper45, NHunter, Devostator, Batandy and many others of the Seriously! community. Attention! Many Survival maps will need this pack to work, so I suggest downloa...21.8k downloadsupdated 7 y ago
• WWeapon Engineby NSKuberWeapon Engine is essentially a re-creation (with its own flaws and improvements) of the firing system in Serious Sam Fusion. Weapon functionality in Sam can be considered rather poor, and the Weapon Engine mod aims to improve that. At least until Croteam finishes their new weapon system, but that...16.8k downloadsupdated 6 y ago
• TThe Ultimate Weapon Resource Pack [Resource]by noam 2000Weapons galore! woooooo! The Ultimate Weapon Resource Pack aims to bring in guns from many different other classic shooters into Fusion, using the new custom weapon feature that allows for custom weapons to be added without them replacing official ones. ***This mod does not replace any weapons, i...15.7k downloadsupdated 8 y ago
• TTLH-style Witch-Bride (Resource+optional replacement)by NSKuberDESCRIPTION This mod adds in a variation of Witch-Bride, inspired by Witch-Bride from VR game Serious Sam: The Last Hope, as an enemy resource. If you don't know, in TLH Witch-Bride doesn't have invulnerability and telekinesis attacks, but instead rapidly teleports around and spams you with proje...14.9k downloadsupdated 7 y ago
• BBullets to Projectiles (resource for modders + Flak Cannon)by NSKuberThis mod is outdated and no longer supported. Weapon Engine is better and more stable in every regard. Please use it instead for your new mods. This mod contains a set of scripts that make it possible to make weapons that normally can only shoot bullets (Assault Rifle, Minigun, shotguns) shoot wi...13.2k 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
• TThe Talos Principle - Cliff Model Resourceby DeVoUPDATE: Version 1.1 -Recreated Normalmaps from real sources, adjusted bump strength Version 1.08 -Added fixes made by Solais due to recent Patch Version 1.05 -Updated Bump distance Info: This Resource Pack adds the Cliffs from "The Talos Principle" into Fusion! To find them go into this directory...11.2k downloadsupdated 8 y ago
• AA Seriously Stupid HD Remaster (Part 2/4)by Seriously StupidREADME Content files required for running A Seriously Stupid HD Remaster. Make sure you also have Parts 1, 3, and 4 subscribed to, along with all of its required items before downloading. Part 1 can be found here: Part 3 can be found here: Part 4 can be found here: Part 2 contains: - Database Fil...10.7k downloadsupdated 5 y ago
• SSerious Sam 4 & Siberian Mayhem Weapons Packby M1L1taristThe (almost) entire pack of weapons from SS4 & SM, excluding FRPCL, and gadgets. These weapons are resources, so you can replace original weapons with them. Models are imported and animated by Bazar; particle effects, fast lights and sound effects are made by Militarist. No dual-wielding and weap...9.8k downloadsupdated 15 mo ago
• TThe Talos Principle - Rock Model Resourceby DeVoh1]UPDATE: Version 1.1 -Recreated Normalmaps from real sources, adjusted bump strength Version 1.08 -Added fixes made by Solais due to recent Patch Version 1.05 -Updated Bump distance Info: This Resource Pack adds some of the Rocks from "The Talos Principle" into Fusion! To find them go into this...9.5k downloadsupdated 8 y ago
• XXLSP84 Mini-Nuke Launcher (Weapon Resource)by BiomechanoidThis is a custom weapon resource for Serious Sam Fusion (It doesn't replace any weapons). The XLSP84 is a mini-nuke launcher that was made out of scrap parts stolen from Mental's forces (and Rodriguez' toaster). Rabbit's Statik player model had a nuke firing ability which kinda inspired me to mak...8.2k downloadsupdated 8 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
• [[Resource] Dynamic Bones for Players/Puppetsby Ryason55This mod adds the capability for players and puppets to have bones that jiggle and move based on the character's movements. Note that for this to work for your models, the skeleton of your character must by modified to support it. I've made a guide for how to do this here: There are now performan...7.5k downloadsupdated 8 y ago
• TTaunting scripts for player modelsby NSKuberThis mod adds two custom commands to keyboard settings, labeled "Taunts" and "Voicelines". If you have this mod, host of the game has this mod and both of you have player model which you are using, then on holding "Taunts" or "Voicelines" key you will see a text prompt. If you press one of mouse...7.3k downloadsupdated 7 y ago
• TTeam Fortress 2 Weapon Packby NSKuberTo use these weapons, subscribe to this mod and all mods listed as required. Then launch moddable version of the game and use CWM or any other weapon-related mod of mine to obtain weapons. Check CWM mod description if you have troubles using CWM! You have to have both HDTFE and HDTSE installed in...7.3k downloadsupdated 7 y ago
• HHealth bars and Damage numbersby NSKuberDESCRIPTION If the mod is working in game, but you're getting Lua error when trying to configure in console, delete "gamefolder/Content/Config/DMGNumbers.txt" file. This mod adds: 1) Health bars to all monsters; 2) Health and armor bars to all players; 3) Damage numbers, showing how much damage e...7.2k downloadsupdated 7 y ago
• MMKX626 Grenade Launcher (Weapon Resource)by BiomechanoidThis is a custom weapon resource for Serious Sam Fusion (It doesn't replace any weapons). The MK626 is a standard break-action grenade launcher fitted with special instant-reloading technology that was captured from Mental's forces. The model originated from Croteam's canceled military shooter a....7.0k downloadsupdated 8 y ago
• XXM-4500 Plasma Gun [Resource]by Spy's Cr3edXM-4500 Plasma Gun,is a futuristic assault rifle. Although the projectiles move slower than bullets, the damage is massive. It uses the powerful energy of plasma and destroys everything in sight. .:Features:. - New sounds included - New animations included - Minimal errors & warning messages ( No...6.8k downloadsupdated 8 y ago
• AAlt-Fire Weapons [Resource]by NSKuberTHIS IS NOT A REPLACEMENT OF DEFAULT WEAPONS! You need to obtain these weapons through other mods (like CWM) before trying to switch firing modes! This is a resource pack containing 21 base weapons from HD and BFE games, but modified (utilizing Weapon Engine technology) to have an alternative fir...6.6k downloadsupdated 7 y ago
• MMAC-11by NekorieScreenshots are outdated (and I still haven't updated it yet xD) Stats: - 5 dmg per bullet - very fast fire rate (~1200/min) - 32 bullets in a clip - medium reload speed - medium spread (good for medium distance) - infinite ammo (TMAR) It can kill Blue Biomechanoid with one clip so it's BETTER th...6.6k downloadsupdated 8 y ago
• MMonsters Weapons Resource Pack (STANDALONE)by Neo_miniganDetached addon with guns from main Monsters Weapons mod for CWM. Dont use it with Monsters Weapons mod Guns list: SSHD -------- DemonHand ZumbullGun ZorgSoldierGun ZorgCommanderGun WalkerRedGun WalkerBlueGun ScorpGun RocketmanGun ReptiloidHand HarpyHand FirecrackersHead BombermanBomb FishGun Klee...6.2k downloadsupdated 8 y ago
• MMonsters Weaponsby Neo_miniganDid you also want to take monsters weapons when you was playing Serious Sam? Why main hero cant take it and use it like cool guy? So.. Now he can. Main features: == The First and Secound Encounter == - 11 new weapons that you can take from enemies: Rocketman Gun - 20 dmg X 500 ammo (slow) Firecra...6.1k downloadsupdated 7 y ago
• DDynamic Eyes Scriptby NSKuberThis mod is a set of scripts that handles dynamic eyes on player models. If the model has eyes set up properly (see the guide), then script will force eyes of this player model to look in the same direction as your actual looking direction. Link to the guide on how to add dynamic eyes to your mod...5.8k downloadsupdated 7 y ago
• [[Gamemode/Resource Pack] T&C Co-Opby Cyborg.SeriousSiteFor the best experience, use T&C Co-Op Lobby as starting level Description Welcome to the new gamemode, which brings chaos of randomness into standard cooperative gameplay. This mod was born from desires and ideas to create something replayable and simply a bit funnier. Therefore, with this mod,...5.7k downloadsupdated 9 mo ago
• DDual Wield [Resource]by NSKuberThis is a weapon pack with two special "Dual wield" weapons which allow you to dual wield most of the default HD/BFE weapons. This mod doesn't allow you to dual wield any other weapons. Why wait for SS4 when you can just mod Fusion? Instructions Make sure you have this mod and all required (see o...5.7k downloadsupdated 6 y ago
• SSerious Sam 4 Enemies Pack (Replacement)by AlfeosThis pack refreshes most of the enemies from SS 3 with more detailed skins and gives new feelings from the gameplay! Original monsters were replaced with identical counterparts from Serious Sam 4 and fully adapted to the mechanics of the SS 3 Feaures:Replaced Kamikaze, Rocketeer, Bomber, Firecrac...5.5k downloadsupdated 5 y ago
• SSerious RPG (Gamemodes)by NSKuberDESCRIPTION Ever wanted to feel more pride and accomplishment when destroying hordes of Mental scum? Or wished that double shotgun didn't suck on final levels of the game? Or maybe wanted a layer of randomized difficulty in Sam? All of the above can bring this new gamemode (actually, two gamemode...5.3k downloadsupdated 6 y ago
• SSerious Sammy Classic (HD)by Ar2R-devil-PiNKyMeet the good old classic Sammy in HD! Without further ado, there's nothing else to say here - I'm personally not satisfied with the 2010 version, so I made this new model. For my own taste =P There are some minor flaws that will be fixed when the game comes out of beta. Who know what could happe...5.2k downloadsupdated 8 y ago
• KKilling Floor 2 -- Desert Eagle (Custom Weapon)by VanyarinCurrent Custom Weapon Version: v3_1 -- Read the Changelog / Update Notes here! TIP -- THIS IS NOT A WEAPON REPLACEMENT, THIS IS A FULL STANDALONE CUSTOM WEAPON FOR MAPPERS/MODDERS TO USE IN THEIR CONTENT This resource can be found in "Content/Vanya/Databases/Items/Weapons" under the names: "HD_KF...5.2k downloadsupdated 9 y ago
• [[Resource] Quake Weapons and Itemsby Ryason55This mod adds the weapons and items from Quake as a resource for mappers. Also includes weapons from the two Quake mission packs, Scourge of Armagon and Dissolution of Eternity. Weapons and associated ammo types included are as follows: ===Quake=== -Axe -Shotgun (Shells) -Double-Barreled Shotgun...4.9k downloadsupdated 7 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
• UUltimate Enemies Portby Mordecai and the KobokerzHi, This is a port to enemies used in my TFE and TSE ultimate, nothing more to say about it4.7k downloadsupdated 7 y ago
• AAutomatic Script Parser for Custom GameTitlesby Ryason55This is a supplementary mod that will run the majority of the CustomWorldScripts that are missing from any currently-existing custom GameTitle. Basically, its kind of a pain to have to update every single global script mod to work with every new GameTitle that comes out. This mod aims to help all...4.7k downloadsupdated 13 mo 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
• 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
• MM60by Neo_miniganM60 - Custom weapon for Serious Sam 3 Use it with CWM mod or in your maps Original model by azlyirnizam Some changes and import to game by Neo_minigan The M60, officially the United States Machine Gun, Caliber 7.62 mm, M60, is a family of American general-purpose machine guns firing 7.62×51mm NAT...4.3k downloadsupdated 9 y ago
• CCheytac M200 "Intervention"by UrbanDeHumanThe Gun, the Myth, the Legend, the Tool of _xXx_360NoScoPeHEaDSHoTFeLLAs_XxX_ of Call of Duty Modern Warfare 2 - Cheytac M200 "Intervention" has come to Serious Sam Fusion 2017! Includes versions for HD and SS3. Intervention makes 50 shots per minute and does 225 damage per shot (with 50% resista...4.2k downloadsupdated 8 y ago
• MMini-Ughzan Enemy Resource Packby BiomechanoidThis pack comes with 3 variants of the mini-ugh-zan enemy I made a few years ago. Now updated for Serious Sam Fusion. All 3 variants have a non-homing rocket attack; however, they do have their own alternate projectile attack. The "regular" variant (middle in the first image) fires cannonballs, w...4.1k downloadsupdated 8 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
• TThe Lost Animationsby AlfeosThis pack includes absolutely every single animation of Sam from the SS2 and SS Xbox cutscenes! This mod is essential for making your own in-game cinematics feel more alive and impressive. Make your Sam dance, laugh, gesture, applaud, and much more... Update December 21, 2025 Added a huge number...4.0k downloadsupdated 6 mo ago
• CCyborg Rocketeer Enemy Resourceby BiomechanoidNow updated for Serious Sam Fusion. This adds in a new enemy resource for SSHD. It has its own custom parameters, sounds, textures, models and netricsa message. It also includes a friendly version (The one that carries the serious bomb) so he can fight along with you. Please note that this is an...3.8k downloadsupdated 8 y ago

340 additions 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.