Mods / Coop

• SSuper Mario Levelsby v359Rus : Супер марио уровни : 1-1, 1-2 Eng : Super Mario levels : 1-1, 1-22.2k downloadsupdated 12 y ago
• SSamuel Free World Mappackby a3n3aThis mappack is the ultimate crazy serious sam co-operative experience you've always wanted It's a wild-ride packed with (custom) enemies, traps and many more. You'll have the opportunity to play through 3 gigantic levels (City of Night - Mirage - Maze War) and a co-op start level to get things g...2.2k downloadsupdated 13 y ago
• [[S/C] Teotihuacan Map Packby RakanishuCredits : Ar2R-devil-PiNKy (Turned Brushes into models and created Pant02.mdl) Alex Peterson (Skybox Nebula) Nifran Tay (His Texture Pack) Myself (for Rocky Ugh-Zan texture and level design) KroZoft for testing and giving feedbacks to the level. Quick information Name : Introduction - Teotihuacan...1.8k downloadsupdated 8 y ago
• [[S/C] Persepolis Map Packby RakanishuThis is the first pack out of three (1/3) of my Introduction campaign, then will be Space maps, for more informations, check my showcase at the end of the desciption. It is free to view and uses seriously! forums, the official Serious Sam forurms Download link of the Part (2/3) : Download link of...1.6k downloadsupdated 8 y ago
• PPolchen Coop Mappack (8 Levels)by a3n3aGreetings, With my third contribution I've decided to present to you the Polchen-Coop series made by Legendary german mapper "Philer" and the also well known author "Freak". These maps are each somewhat short but are incredibly fun to play in Cooperative (they cannot be played in SP) Included in...940 downloadsupdated 12 y ago
• BBattle of the Year 2003by KoeniCoop Map for Serious Sam Classic : TSE and Revolution :) ☠Map Name : BotY 2003 ☠Author : Philer ☠Date : 29.10.2003 ☠Players : 2-6 ☠Map version : 1.1 "There are a lot of Monsters and fun... And you'll meet all bosses again... It's a battle of the year...! " What's be add/repair on future : ☢- Resp...370 downloadsupdated 12 y ago
• OOtmosisby NonHuge Adventure set over 2 massive maps, well over 3 hours play through canyons, hills, lakes, lava pits, underwater caverns and battle in a huge Aztec city. Enabled for both Single Player and Co-op play. You had better cancel whatever you had planned! I am NOT original author of this map, i just...269 downloadsupdated 12 y ago
• HHopper Massacreby GraphXStand in green light to spawn a serie of 20 hoppers. Stand in red light to trigger 999999 hoppers. Hoppers spawn on the red light zone.208 downloadsupdated 13 y ago
• TThe Big Houseby 76561199069800967You are supposed to be an ant and you are exploring a big house where you will go to new places while finding secrets, some bosses and enemies. Fun fact, maybe I'm wrong, but I think this is almost the first or second Serious Sam map of this style. I'm surprised I haven't seen other types of maps...195 downloadsupdated 15 mo ago
• TThe Big Kitchenby 76561199069800967You find yourself in a gigantic kitchen, but you are actually the size of an ant, so you will be able to explore a kitchen where you will have fun exploring it and finding secrets and monsters. Credits: Golden Laser by ZynChroMaTiK. Aludran Reptiloids from Serious Sam Beta by Bitkim Internal Test...149 downloadsupdated 15 mo ago
• RRat map packby 76561199069800967This is my first Serious Sam Classics Revolution map pack, which means you will play as if you are the size of a rat, ant, toy, I prefer to call it the size of a rat xd, so you will feel like everything is giant. . , it's not bad to have a little distraction, my idea is also to be able to explore...148 downloadsupdated 2 mo ago
• TThe Big Bathroomby 76561199069800967You are the size of an ant and you are in a bathroom, you can walk through the toilet, or places like the bathtub, the floor and the cabinet where you wash your hands, etc., it is practically like a joke, because you will meet ugly monsters in random place Some small bugs i need to fix and maybe...131 downloadsupdated 15 mo ago
• SSewers Underwaterby 76561199069800967A level where Sam will fall in the middle of underwater sewers, it will be difficult to resist breathing so try to quickly look for places to catch your breath. Credits: Level created by me in Serious Editor by Croteam. New textures created by me from Paint by Microsoft.117 downloadsupdated 3 y ago
• TThe Big Poolby 76561199069800967You are the size of a rat and you are in a beautiful pool reflected by sunlight. And good morning by the way. ?? Credits: Golden Laser by ZynChroMaTiK. Aludran Reptiloids from Serious Sam Beta by Bitkim Internal Test Arachnoid by JesterOfDestiny. Next Encounter Werebull by JesterOfDestiny. Next E...112 downloadsupdated 15 mo ago
• 22 buildings in orbitby 765611990698009672 buildings floating from orbit, you start in a building with five floors full of spawned monsters, the second building belongs to the monsters, which is quite mysterious, your mission is to defeat the walker boss. The funny thing is that this level exists in one of my jumping kangaroo levels. Th...93 downloadsupdated 3 y ago
• TThe Big Classroomby 76561199069800967You are the size of a rat or almost a soldier ant so to speak, and you are in what is supposed to be any classroom, but you will be there during 00:00 AM and there will be no light, it seems a little creepy but no xd. I've been seeing that the size doesn't seem to have much to do with the lag, I'...88 downloadsupdated 15 mo ago
• TThe Big Restroomby 76561199069800967You are the size of a rat and you are locked in a public bathroom, you have to find the exit and you will find several variants of enemies and in some places not so much. Credits: Golden Laser by ZynChroMaTiK. Aludran Reptiloids from Serious Sam Beta by Bitkim Internal Test Arachnoid by JesterOfD...49 downloadsupdated 15 mo ago

17 coop 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.