- Action
- Adventure
- Indie
Game
Serious Sam 4
Humanity is under siege as the full force of Mental’s hordes spread across the world, ravaging what remains of a broken and beaten civilization. The last remaining resistance to the invasion is the Earth Defense Force led by Sam “Serious” Stone and his heavily-armed squad of misfit commandos. Croteam returns with a high-powered prequel to the Serious Sam series that scales up chaos to unprecedented levels. The classic Serious Sam formula is revamped by putting an unstoppable arsenal up against an unimaginable number of enemies that requires players to circle-strafe and backpedal-blast their w
Serious Sam 4 reignites the classic FPS series in a high-powered prequel loaded with an explosive arsenal, intergalactic carnage, and perfectly timed one-liners.
About Serious Sam 4
- Released
- September 2020
- Developer
- Croteam
- Publisher
- Devolver Digital
- Engine
- Serious Engine 4.0
- Platforms
- Google Stadia · Xbox Series X|S · Linux · PC (Microsoft Windows) · PlayStation 5 · Mac
Where to get it
Release, studio and platform data from IGDB. Store links go to the sellers, not to us. We do not sell games and we do not host files.
Browse everything
Sorted, filterable and paged. Every link goes to the author’s own download.
From the developers
Official announcements, newest first. Posted on Steam.
- Community AnnouncementsSerious Sam is Back, Baby! Enter the Shatterverse.Hey folks, It's a massive day for everyone at Croteam and Devolver Digital because we get to announce a brand new partnership with Behaviour Interactive, who are working on the next installment of the Serious Sam series. Serious Sam: Shatterverse is their take on the franchise, and a reimagining of the backpedalling mayhem you all love as a roguelite cooperative shooter. With Croteam hard at wo...
- Community Announcements25 YEARS OF SERIOUS SAM!Today, our favorite action hero officially turns 25 years old!It’s been an absolutely wild ride for Sam. From blasting through the sands of ancient Egypt in a genre defining first-person shooter, to tackling top-down indie spin-offs and stepping directly into virtual reality, Serious Sam has taken many forms over the last quarter-century. But no matter what field you drop him into, he has alway...
- Community AnnouncementsA Seriously Serious ChristmasFrom all of us at Croteam, we’d like to wish you a seriously Merry Christmas.May you enjoy the holidays with friends and loved ones, stay full of health, and welcome 2026 with joy, optimism, and a positive spirit for the year ahead.Thank you for being part of our community, and once again, Merry Christmas!
- Community AnnouncementsFeatured Mod - Serious Sam Reborn{STEAM_CLAN_IMAGE}/32617970/065feffb9de77f2f56ff3c318631d8a20db06972.jpg Hello everyone, and welcome back to Featured Mod! It's time to take a small break from solving all those puzzles and delve into some SERIOUS business. Today, we're featuring one of the most ambitious Serious Sam campaigns out there: "Serious Sam Reborn" for Serious Sam 4, made by "Nonamewtff" Embark on a thrilling new adve...
- Community AnnouncementsSerious Sam 4 now supports Steam Deck!{STEAM_CLAN_IMAGE}/32617970/cb0731f10a56053e6d22a91e7b1961d016f307c8.png Hey everyone! As you have noticed we released a small, but notable update for Serious Sam 4. The update is focused on performance and game stability, new GPU support and most importantly the game now has a Steam Deck support. Make sure to share your experience with the Steam Deck with us, and most importantly have fun! Muc...
- Community AnnouncementsSerious Sam: Siberian Mayhem is available NOW!{STEAM_CLAN_IMAGE}/32617970/62952f595468a02426c4776760b1dfd2ea942141.jpg Hi everyone! The next chapter in the adventures of Sam Stone is upon us, as Serious Sam visits Russia in Siberian Mayhem. A joint effort between Croteam and powerful Timelock Studio, Siberian Mayhem is a stand-alone expansion to Serious Sam 4, cranking the action up to 11. Check it out and stay Seriously frosty!
- Mods indexed
- 588
- Versions
- 0
- Newest tracked
- none yet
- Most disruptive update
- No breakage data for this game
Most downloaded
Measured from the source's own counts, summed across every release.
- Russian Voiceover - Part 1A mod adding Russian Voiceover into the game. A cooperative project of channel METAL TÄLES and creative union Mechanics VoiceOver. Mechanics VoiceOver: VK - YouTube / METAL TÄLES: VK - YouTube / Attention! To get the mod working, you will also need to subscribe to the 2nd part: __________________...16.9k downloads
- Russian Voiceover - Part 2A mod adding Russian Voiceover into the game. A cooperative project of channel METAL TÄLES and creative union Mechanics VoiceOver. Mechanics VoiceOver: VK - YouTube / METAL TÄLES: VK - YouTube / Attention! To get the mod working, you will also need to subscribe to the 1st part: __________________...16.4k downloads
- Serious Bomb [Resource]What's more iconic in the entire franchise than the logo itself ? Okay so basically... just like the Flamethrower it's using original params which makes it 1:1 functional the way you know it from Classics and HD. Besides that i've also included Gadget versions which is the modern variant of how S...15.5k downloads
- Cryo Khnum (New Enemy Resource)Another Enemy Resource has entered the field! As part of my idea of new enemy variants with different attack patterns, new visuals and new ways of enhancing the gameplay, this Cyro Khnum shall bring in a different kind of threat than its normal counterpart, with spread-shot cyroballs, a frost bre...14.9k downloads
- Dunes14.8k downloads
- Cucurbito The Pumpkin Enemy ResourceCucurbito The Pumpkin enemy from Serious Sam 1, now available in SS4! Puppet and Behavior localization is the same as other enemies. Databases->Behaviors/Puppets->Enemies->Cucurbito It has it's own netricsa message and is ready to be placed as an enemy on your maps.14.6k downloads
- Reptiloid Highlander Enemy ResourceMy first Serious Sam 4 Workshop Upload. :o So since SS4 lacked Highlanders and simple Recolors are not trendy these days, I decided to give it a shot in making a familiar but different sort of enemy for such an iconic foe. The Highlander is clad in protective armor to better shield itself from we...14.4k downloads
- Zumbul Enemy ResourceZumb'ul from Serious Sam 1, now available in SS4! Puppet and Behavior localization is the same as other SS4 enemies. Databases->Behaviors/Puppets->Enemies->Zumbul It has it's own netricsa message and is ready to be placed as an enemy on your maps.14.2k downloads
- Sledgehammer [Resource]Okay so... basically... here's replica of the best melee weapon in the series, that's right - it's the Sledgehammer. Apparently not many were satisfied with the Knife so here's one more addition to your firearms. It works identically just like BFE but now modernized - more "coordinated" screen mo...13.9k downloads
- Siren [Resource]Sirens are underwater enemies that emerge and attack you with magic homing projectiles. They are also known from TLH Valtos planet but now you can use them even in 4! [.:Highlight:.] * Unique Behaviour * Detailed Destruction * Weakpoints (Head) * Netricsa [.:Stats:.] Base Health: 60 Projectile Da...12.9k downloads
- REBORNSaving 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...12.0k downloads
- NSKuber's Resource ManagerYou may notice that your list of weapons is empty upon first use of the mod. This is because you have to use the Update database button on the bottom row first to obtain the list of supported entries! You may also notice that Stats Modifications are "Disabled" by default. To enable them, press th...10.1k downloads
- Thebes - Karnak (Demo)Egypt? Egypt again?! Welcome to the "Thebes - Karnak (Demo)" map! It's not just a port, it's a map adaptation with own characteristics and differences! Features - Mixed HD and SS4 gameplay. - Extended Netricsa System. You can see visual information during reading or, for example, have ability to...8.6k downloads
- [Resource] Aludran Reptiloids Pack (+3 Reptiloids) {SS4 version}Additional Aludran Reptiloids for SS4 Enemy resource Includes custom Projectiles, Messages Includes: -Highlander -Highlander's Bride -Higlhlander Goliath Free for use on any your maps :3 Secret Giant Kazahstan Lizard project7.8k downloads
- Flamethrower [Resource]Here comes A Flamethrower Returns, Go hype. Okay so basically.. the flamethrower itself is very similar to the HD by stats which is very unique addition to your arsenal. All cool but the flamethrower as any unused stuff comes with some limitations. As it's using Flamethrower Weapon params and not...7.4k downloads
- Floating Items Pack [Resource]This mod brings back the floating items style for Serious Sam 4, as well a sweet bonus: the classic items ported from Fusion. As a resource, it doesn't modify the original ones, those are available to be used in custom maps. To use these items in your map, add a "Generic Item" entity, and point t...6.6k downloads
- Lava Elemental Large [Enemy Resource]Description Have you seen a small and big golem, but not a large one? Now he's back in Serious Sam 4! The mod have a custom projectile and original states This is a resource for mapmakers only! If you wish to commission a mod to your liking, send an invite to friends list and well discuss it (REQ...6.3k downloads
- Marsh Hopper Enemy ResourceMarsh Hopper enemy from Serious Sam 1, now available in SS4! Puppet and Behavior localization is the same as other enemies. Databases->Behaviors/Puppets->Enemies->Gizmo It has it's own netricsa message and is ready to be placed as an enemy on your maps.5.5k downloads
- Common Weaponry Presets(Not Replacement !) It's basically bunch of presets and assets that will possibly be reused in future weapon mods, this way it will make the mods lighter filesize and easily to be updated if necessary. It will constantly be updated with almost any new weapon mod or possibly add content that might...5.3k downloads
- Power Ups Restoration [Resource]This mod brings back some power ups from previous Serious Sam games! Did you miss it? Of course you did. Current power ups: - Serious Damage - Serious Speed - Invulnerability - Serious Rage (new power up, based on Serious Sam 4 rage serum) This mod requires the Floating Items Pack. To use the pow...5.2k downloads
- Colt Anaconda Revolver (NRM Weapon Resource)This mod DOES NOT replace the original Pistol! You have to use NSKuber's Resource Manager in order to spawn and/or replace any weapon with Colt Anaconda. This mod adds the powerful Colt Anaconda revolver to Serious Sam 4! It includes custom animations, stats and sounds. The revolver is kindly pro...5.2k downloads
- Enemy Consistency FixesThe intention behind this modification is to maintain the vanilla experience whilst adding in missing sound effects, graphical effects and re-enabling any unused features which are still fully usable. Any enemy improvements that you'll find in the SS:SM release will also be included. Gibs and Deb...4.9k downloads
- Lightning Man [Resource]Lightning Man has the ability to levitate in the air and can teleport to specific locations. His attack is to fire a beam of lightning at the target. More known from TLH used as distraction. [.:Highlight:.] * Unique Behaviour * Detailed Destruction * Weakpoints (Head) * Netricsa [.:Stats:.] Base...4.8k downloads
- [Fix] Animated mech weaponsA minor fix that makes the weapon on the Mech not static by adding missing animations. What's new? ⚬ Animated miniguns. Now they are rotating! ⚬ Animated rocket launchers. Added moving parts. ⚬ Works for both Mech types.4.8k downloads
Browse all 588 Serious Sam 4 mods Sortable by downloads, rating and date.
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Why Serious Sam 4 mods break
A mod is compiled against one version of a game. When the game updates, anything that reached into the parts that moved stops working, and it usually stops working silently rather than with a message that explains itself.
That is what the table above counts. It is not a guess: each row is a mod the community has reported as broken by that specific release. The number is a fair measure of how disruptive an update was, and it is the reason people delay updating a game they have modded heavily.
Common questions
Does IndexGG host Serious Sam 4 mods?
No, and it never will. Every download link points at the author's own page on Nexus, GitHub, CurseForge or wherever they published it. We index the ecosystem; the files stay with the people who made them.
Where does the compatibility data come from?
From the communities that maintain it in the open, not from guesswork. Each claim carries how it is known, so a reported breakage is never presented as though the author said it.
Why is a mod listed as broken when it works for me?
Compatibility depends on your exact game version and the rest of your load order. A mod marked as broken in one release may work fine on an older one, which is exactly why the version is recorded next to the claim rather than a bare yes or no.