Mods / Single player

• [[SP] Bustle of New Year...by Cyborg.SeriousSitePrize winning map, which was created special for SeriousSite.ru competition Jingle Bombs 2021 Description The New Year is about to come, and Sam seems to be overwhelmed by some small tasks... yet again! Your goal is to take care of all the tasks your friends tell you to do before the New Year hit...914 downloadsupdated 5 y ago
• MMelody's Fast Gameplay Mod (TFE & TSE)by MelodyQuake styled gameplay for TFE&TSE. This mod provides fast gameplay for TFE and TSE. This mod is not for BFE. Disclaimers: This is not for VR. Rage alert: This mod is best suited for people with high reaction times and good aiming skills. Even for best players, I highly suggest playing on Normal d...903 downloadsupdated 9 y ago
• [[IKSMJ2025] Hyperboreaby ДEГEHEPAЛ ПPOCTOEБЛИHThis map was made for . Make your way through the mystery of the world, listen to music and crush your enemies! Lizards - Black desert Rig - Bazar Axe - Bazar Lizard's anims - SilverPredator Most of the assets - SS:SM Thanks to DeadKadatth and HoBu4oK for a lot of kind words and help with ideas!895 downloadsupdated 11 mo ago
• PPrehistory of the Serious Sam Fusionby Neo_miniganThis is a small campaign from 4 maps. The story will tell us what was before the main invasion of "Mental" and what Sam did to receive the status of "Serious" Sam. My first campaign on Serious Sam 3 that now was moved to the Fusion. Rebalanced to play it without global mods and with some new weap...883 downloadsupdated 7 y ago
• BBLOOD PATCH SPIDERby 76561199441313918Вернул эффект bloodtrail паукам, также добавил портированный из SS4 эффект кровяного взрыва. P.s. если честно не понимаю тенденцию croteam ломать то, что работает. В оригинальном SS3 трейлы что на пауках что на остальных монстрах работали исправно, во fusion они фактически не работают. Returned t...879 downloadsupdated 8 mo ago
• BBFE Rocketeer Attack Improvements (Enemy Resource)by Seriously StupidCustom Enemy Resource for BFE mapping.This mod changes the attack range and shoot blast properties of both the regular and homing projectile attacks on BFE's Rocketeer, with some small animation edits. The new files can be found in the "Sacor" folder in puppets/behaviors. The BFE Enemies model fo...876 downloadsupdated 7 y ago
• LLast Bastion (Fusion)by [-:-]HarbingerThis Ported HD Map takes place in a secret area within Egypt, that some of its inhabitants used to hide from the mysterious invaders seeking to ruin their lands, unfortunately they failed, will you be the same like them? This is one of my HD maps that has been Ported to Fusion, with updated visua...874 downloadsupdated 9 y ago
• MMoonLight Encounterby SkiffRUS: Сэм отправился выполнять смертельное задание, за которое ему обещают много золота. В Лабиринте Боли было уничтожено много игроков, будет очень прискорбно, если Сэм тоже погибнет. Ведь из этого Лабиринта ещё никто не выбирался живым. Нас ждут толпы монстров, разнообразные ловушки, огромные и...860 downloadsupdated 8 y ago
• ((SP/SV/COOP) Serious Sam History Preservationby Mordecai and the Kobokerz(SP/COOP) Serious Sam History Preservation is a mappack project that brings non workshop maps to Fusion in the workshop Due to new Serious Sam players cannot get their hands on them since you cant download the maps that are uploaded to Russian websites, I am bringing them to workshop to make sure...860 downloadsupdated 4 y ago
• ЛЛесby ГнаарЭто моя старая карта 02.02.2017 То есть это порт старой карты на новый движок Предыстория: Создавая эту карту я вдохновлялся картой из Painkiller, те кто играли это заметят. Те кто захотят найти оригинал в БФЕ, ищите. Но он скорее всего не работает из-за того что я рукожоп По сути я довёл карту д...854 downloadsupdated 7 y ago
• SS Prazdnikom Svatoy Pashiby ChrysalisMy new map for SinglePlayer/Coop Mordekai has stolen Christmas. After the events of "Yappi Door" village mordekai escaped to the nearest mountain. You are teleported here to save christmas. I hope you'll enjoy the map Merry christmas and happy new year!853 downloadsupdated 7 y ago
• CCaustic Cavernsby [-:-]HarbingerWelcome back to another one of my many maps to come, fight in a Toxic Cave as the Forces of Quake and Mental join together to kill you, can you survive? Yes you need Quake 1 Resources to play it.845 downloadsupdated 9 y ago
• MMonster Hunter: The Unrelenting Tigrex!by [-:-]HarbingerWelcome all to something I've been tinkering with for a long time, lately managed to get Monster Hunter models going so this is a test to see if people want to see more. Sam has been ordered to go into the depths of South America as the EDF has gained intel that Mental's old and abandoned inter-d...840 downloadsupdated 6 y ago
• [[VR] Manual shotgun reloadingby NSKuberThis mod changes functionality of single shotgun in VR version of Fusion. Works only in singleplayer! (Please don't go into flat game with this mod enabled, because it will just make your single shotgun useless) Now you cannot dual-weild shotgun. Instead, you can hold it with two hands (like snip...840 downloadsupdated 10 y ago
• HHunt Down the Special Soldier v1.1by KSEONHello ! this my first content I posted in Steam! Someone played and someone sees for the first time. Let me remind you, these 2 maps were made by me for map contest which was in 2017 year on site s- serioussite.ru and seriouszone.com. All those who helped a special thank you! Enjoy Please leave c...834 downloadsupdated 7 y ago
• ~~Rocket Ranger!~ Serpentine mountains.by Mr.OgurchickT_TRocket Ranger - This is a card, the passage of which will slightly reveal the potential of the mechanics of rocket jump in Serious Sam. The card will provide you with approximately 20 minutes of gameplay in both single player and multiplayer! Also, she is imprisoned under the Coin op passage. Dow...823 downloadsupdated 7 y ago
• ((SP/COOP) Unknown Egyptby AndreikiAll versions: ✔ - Original ✔ - Reimagined (timilyo80) ✔ - Reimagined (Mordekai and the Guffys) ... Do you love this mod and are waiting for updates? You can speed up their release! Add me as a friend and we'll discuss it Port includes: -New secrets -Updated visually -Updated visually secrets -New...822 downloadsupdated 6 y ago
• QQuick Switch (Script)by Serious GooseQuick Switch A mod that allows you to quickly switch weapons without waiting for the shot animation to finish. Features Only works with vanilla TFE/TSE/BFE guns (the script uses paths to the weapon .ep files, so modified original guns will still work). Does not work/works very poorly in multiplay...814 downloadsupdated 11 mo ago
• SSomewhere In Egyptby 76561199040911078Updates: Fixed bug with terrain. Fixed balance. Fixed some glitches In first level, light and fog changed. READ THIS! I know some people will think that i bad in mapping but this is my first map in editor so please don't be so mad on me :( Sam difficulty is very hard on last level, but real. I've...798 downloadsupdated 6 y ago
• DDesolate Tombby [-:-]HarbingerTaking a page out of Bio's book, I've successfully converted a DM Vanilla map from SS3 into a viable Survival Map, its a bit small but the fighting here will be intense as the Forces of Quake challenges you, can you survive against the tide?775 downloadsupdated 9 y ago
• [[Jingle Bombs 2024] Eviction Noticeby ChrysalisJingle Bombs 2024 competition winner map! --- We have received an emergency message. The New Year celebration is in danger of being disrupted. We have been informed that Santa's Workshop has been attacked by the Snow Queen and her troops. Santa Claus has been holding out for a long time to protec...774 downloadsupdated 22 mo ago
• SSerious Sam - The Assassin Beast, Nargacuga!by [-:-]HarbingerAnother map with a Monster from Monster Hunter in Serious Sam to test the Resource's capabilities. Hunt the elusive beast that is known as Nargacuga, a Pseudo Flying Wyvern that relies on rapid movements and fast attacks to overwhelm their prey. Have fun hunting him!763 downloadsupdated 6 y ago
• AA Seriously Stupid Serious Sam 3 Remaster - "Karnak Demo"by Seriously StupidNOTICE: This demo is outdated. A new version of this mod has been uploaded, and it does not contain replacement files. See here: This is only a single level demo of a possible remaster. Please read the PAQ below for more details Secondly, this mod uses several replacement files, details of which...761 downloadsupdated 7 y ago
• SSerious Sam Fusion: BFE Map Patchby The Eternal CrusaderThis mod aims to restore enemy spawns which got removed in fusion and fix some bugs Global: -Easy/Normal enemies from Standalone that are Hard/Serious only in Fusion have been changed back -Singleplayer enemies from Standalone that are Coop only in Fusion have been changed back -Infinite ammo cra...756 downloadsupdated 4 y ago
• PPurple Pride HD: The Second Encounterby PikaCommandoIt's Serious Sam HD: The Second Encounter, but every enemy is a Beheaded Rocketeer. SERIOUS SAM HD: THE SECOND ENCOUNTER IS REQUIRED TO PLAY THIS752 downloadsupdated 6 y ago
• [[2024 Remastered] Through Landscapes 1 Fusion (SP/COOP)by AndreikiIf you wish to commission a mod to your liking, send an invite to friends list and well discuss it (REQUESTS ARE NOT FREE) Port includes: -Balance/design changes (only 1 level) -MANY, MANY Bug fixes -Now for fusion :З -3 level now playable (fix all bugs) Important Notes If you are subscribed to T...752 downloadsupdated 18 mo ago
• PPractice Field (100% Orange Juice)by tensor algebraHere it is. After taking a short break from making my Quake III Arena maps, I decided to make a survival map based on 100% Orange Juice. I think I managed to nail it somehow, since it's as bullshit as OJ itself. Do you think your skill will save you in here? Hell no. Everything is RNG dependant....748 downloadsupdated 8 y ago
• BBroken Map [Single]by SeriousVovanThis story began in 2018. It was a spring evening. Steam workshop, you decide to download one map and play. But something obviously went wrong. The map did not start, and you were in a strange place. Why didn’t the map start? What place did you end up? However, you must get out of here by any mea...741 downloadsupdated 7 y ago
• WWrong Destination - Custom Missionby SkorlyThe Talos Principle with guns! This short little SS3 map should take you around 15 minutes to complete. Now for the LORE: This map was supposed to be part of a little map pack called "Wrong Destination", which I was making in collaboration with alex_mmc. It was being worked on around when SS4 was...730 downloadsupdated 4 y ago
• HHatshepsut Survival (HALLOWEEN UPDATE)by AndreikiIf you wish to commission a mod to your liking, send an invite to friends list and well discuss it (REQUESTS ARE NOT FREE) Hatshepsut is a Survival map remake of Hatchepsut level of TFE. My first map:> Credits: Author video: Unreal Visor. Models mod *Chainsaw Encounter* HALLOWEEN UPDATE: -All new...729 downloadsupdated 9 y ago
• NNPC Companion (with Serious Sam 2 Natives)by Ryason55This mod adds a set of gamemodes that allow you to spawn up to 4 NPC allies. By default this includes a set of NPCs based off of the natives from Serious Sam 2, but also has the framework for other modders to implement their own NPC packs. If you want to make your own Companions, check out this g...726 downloadsupdated 6 mo ago
• CCampaign+by 76561198879145591What is it? Campaign+ is a new gamemode that adds co-op settings and mechanics for a SinglePlayer game Notes: If you want to change the game settings, as soon as you enter the "Customize difficulty" menu and configure everything you want, open the console and type gamStart() there and press Enter.722 downloadsupdated 10 mo ago
• ((SP/COOP) Road to Babylon HD Portby Mordecai and the KobokerzHi, this is my sixth port to Fusion, SashexSRB's Road to Babylon This port has changes - Added one secret - Added translations - French, Italian, German, Spanish, Russian. Credits SashexSRB for thumbnail for the port and letting me port it to Fusion716 downloadsupdated 5 y ago
• FForgotten Arena - Fusionby [-:-]HarbingerA Port of a map I did from SS3 and also there is a few different enemies to make up for some that hasnt appeared yet. Mind you, this will get worked on its just so its up and I can see how people note the slight changes.715 downloadsupdated 9 y ago
• CChristmas in Sittenby ThanadraxThis is a map ported from Serious Sam Classics The Second Encounter project, Serious Sam Christmas Mappers Collective Mappack. This is my first experience in porting classic maps to Fusion, took around 7 hours. A chill, short and fun winter map. Original author: Biohazard Dood710 downloadsupdated 5 y ago
• AAhead of Speed: Egypt Aroundby 76561198897754835Sand? I love sand! Welcome to Ahead of Speed: Egypt Around - an SP/COOP short mappack set around egyptian temples and cities, flooded with Mental's horde. This pack of 3 missions was made a while ago, but got to the release only now. It's a simple, little adventure, where you will revisit familia...709 downloadsupdated 4 y ago
• MMetropolis Ripoffby ExTaZzYEllo guys, i tried to make my own original map, but i ended up with Metropolis Ripoff, Enjoy ! Btw i worked 2 years for this708 downloadsupdated 7 y ago
• ((SP/COOP) Gothic Kingdomby Mordecai and the Kobokerzthis is new SP/Coop Map that I have created, taking place in a Medieval-themed level with Secrets This map has Spanish Italian Russian French and German translations701 downloadsupdated 6 y ago
• BBhop (Script)by Serious GooseBhop Mod This mod adds a bunny hopping mechanic to the game, similar to the one from Quake 3. Hold W + (A or D) and slowly turn your mouse in the same direction while airborne to gain speed. This mod was created specifically for speedrunner(s) and for the Quake 3 Movement mod. Released separately...698 downloadsupdated 11 mo ago
• IINTERVENTION - First Contact [EP1]by ДEГEHEPAЛ ПPOCTOEБЛИHAfter many changes and improvements - I want to present you the final look of the first episode of my campaign. This mini campaign includes two levels, which are presented as two acts. Have a nice game! First level: More then you know Second level: Living Power Special thanks! - YANexus, Thanadra...696 downloadsupdated 6 y ago
• [[SP/COOP] Kladbishe Vlada Borshaby ChrysalisCemetery Adventure. You need to find 4 green pumpkins, which are the key to the entrance to the fortress, which contains the portal home. Simple map for SinglePlayer or Coorperative (2nd is better way) for Halloween. Hope you like it.691 downloadsupdated 6 y ago
• WWitch Bride Delayed Corpse Burnout (Replacement)by Seriously StupidReplacement mod which edits the model and ragdoll transition animation files to prevent Witch-Brides from instantly burning out upon death. Also works with the TLH Witch-Bride mod.684 downloadsupdated 7 y ago
• UUncharted Landsby LisSenUncharted Lands | Episode: Egypt This is a banal map-pack consisting of three different maps on the theme of Egypt. The story of the episode is documented in Netricsa. Tester: EnDragnil677 downloadsupdated 5 y ago
• SSpin me Round Roundby Neo_miniganUPDATED Simple survival map with random monsters and items spawners. Best to play with friends. Tip - Run and gun.671 downloadsupdated 10 y ago
• JJojo's Bizarre Adventure Soundtrack Replacementby Mental4The original Serious Sam 3 music (a some sound) are replaced by Jojo's Bizarre Adventure sound. This mod it's also available in the Workshop of Serious Sam 3: BFE: Enjoy! P.S.: If you want suggest me other music and sound from Jojo to update this mod, contact me to Steam ;)670 downloadsupdated 9 y ago
• EEgypt Deluxeby CUM SLAYERИ так. Это моя вторая карта и я уже начал делать маппак, круто. Вот только фулл выйдет в лучшем случае через год:) так что про маппак я либо забуду либо он будет не скоро. Ну а сейчас я наверное займусь предыдущей картой ибо в ней на 2 волне баланса нет и чем нибудь еще. Такс. Я обновил мультипле...668 downloadsupdated 5 y ago
• BBadmoon Bog Reawakenedby FinzyBadmoon Bog has been reawakened from the dead into Fusion... This is a Fusion remaster of the original 2013 Badmoon Bog campaign for SS3: BFE, featuring an extended second level with expanded horror parts. Like the original campaign, it's experimental in style, with plenty of custom assets and so...660 downloadsupdated 2 y ago
• [[IKMMJ2025] Palenque - Reservoirby ChrysalisPalenque - Reservoir - is a small singleplayer/cooperative map was made for 1 day. Map is a member of INTERRABBITAL KHRETH MAYAN MAPPING JAM 2025! Hope you enjoy it :3647 downloadsupdated 17 mo ago

476 single player 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.