Steam Workshop::Coop modifications

Created by Balim

Plot "Somewhere near city 17 the rebels have been trying to destroy the combine communication towers known as relays. Their efforts have been futile until now... You as Gordon Freeman must help the rebels sabotage the combine relays." Original Mod Created ...

Antlions Everywhere Mod Support

Created by Balim

Plot "The main character - Carter Grok together with the squad received a task: to reach City-S to whom rebels are located. On the way at group the thrown mine is located. From all directions there are forces of aliance, other way isn't present except as t...

Avenue Odessa Mod Support

Created by Balim

Plot "Colonel Odessa Cubbage needs your help. Together you can escape the city by train, but you must work as a team. Don’t relax too soon though, because things have a way of catching up on you!" Original Mod Created By: Jason Gimba (Maki) Instructions Do...

Better Offshore Mod Support

Created by Balim

Plot "Setting: The entire modification is set at night on a small, rocky island off the coast of City 17. Rugged terrain, abandon structures, and multiple combine outposts will make escaping this island hell more than just a walk in the park. Story: The Sc...

Black Mesa & Improved HL1 Xen Mod Support

Created by Balim

Black Mesa by Crowbar Collective Black Mesa Improved Xen by Vlad Lisovichenko (zloikot) Hazard Course by PSR Digital Fixed Eli and Kleiner models by Daniel MCH This is support for the pre-Steam version of Black Mesa, the Steam version does not work in Syne...

Below The Ice Mod Support

Created by Balim

Plot "Sent on a mysterious mission to a frigid wasteland, questions begin to arise. What are you looking for? What will you find? What price will you have to pay to know the truth?" Original Mod Created By: Evan Holloway (theevina) Thanks to Savv and his t...

Complete Russian Language

Created by PootyPootixMate

TESTSET...

DayHard Mod Support

Created by Balim

Info "DayHard is a single player adventure set before the events narrated in Half-Life 2. You play as Gordon’s brother, Morgan Freeman. He’s not timid like Gordon: he’s able to talk to people, and even to make comments on the situation! Unbelievable, huh? ...

Deepdown & Aftermath Mod Support

Created by Balim

Deep Down Plot "Firmly sticking to the Half Life 2 formula, Deep Down is a new entry in the story of Alyx and Gordon as they continue the hunt for Combine Advisors in the area surrounding White Forest. Combine Forces, Zombies and Antlions lie between them ...

DownFall Mod Support

Created by Balim

Plot "You're once more putting on the HEV suit as Gordon Freeman. Your mission is to recover a newly developed technology by the resistance, known as the "citadel buster", before the Combine manage to destroy it." Original Mod Created By: marnamai Instruct...

Combine Destiny Mod Support

Created by Balim

Plot "The town of Coonersville has rebelled. The citizens there have overthrown the security forces and established a base at the top of the mountain. The town was heavily shelled with headcrab canisters, forcing the rebels into hiding. A Combine Overwatch...

Causality Effect Mod Support

Created by Balim

Plot "A Red Letter Day Gone Wrong?" Original Mod Created By: Anthony Stone (OnboardError) Instructions Download and install Causality Effect to sourcemods which is located in: Steam\steamapps\sourcemods If you are on the Synergy 4.3 beta, you don't have to...

Coastline To Atmosphere Mod Support

Created by Balim

Plot "This mod continues the story where Half-Life 2 finished and offers one possible scenario. After the big explosion you fall to the ground and are very badly injured. Some people find you and take you home to a small village outside the city where the ...

[Syn 4.3 Beta] Minerva: Metastasis - Workshop Support

Created by DaftMink 🐾

...

Updated Synergy Mod Supports

Created by Balim

This addon is meant to update/fix the officially supported Mod Support's The fixes in this addon currently apply to: - Rock 24 - Minerva: Metastasis - City 7: Toronto Conflict...

Uncertainty Principle Mod Support

Created by Balim

Plot "When the Combine raid your Resistance hideout, you are forced to flee into the depths of the Outlands. But with Overwatch forces hunting you down, and the local fauna out to get you, danger is always just around the corner. Play through four chapters...

They Hunger Again Mod Support

Created by Balim

Info "A total remake of old good Half-Life mod on modern Valve Source™ engine, with the participation of skilled developer, designer and composer, will make you again feel the atmosphere of fear and fun!" Mod Managed By: Romadoma This is only part 1, and t...

The Very Scary Very Late Halloween Map Pack

Created by ILOVEPIE

Now more than a year late! Maps: syn_ghosthunt syn_ghosthunt_2 (syn_ghosthunt_3 coming soon) RESTART SYNERGY TO HAVE THE MAPS APPEAR IN THE MENU! All ISSUES/HELP REQUESTS ARE TO BE POSTED IN DISCUSSIONS NOT COMMENTS!...

The Stanley Parable Map

Created by Mil_House

The stanley Parable mod support, this is not professionally done and I just did it with my mates as a laugh. Most endings do not work but the main ones do. The stanley parable is a hl2 mod which I decided to port over. Look it up if you wanna see what it i...

The Masked Prisoner Mod Support

Created by Balim

Plot "The Masked Prisoner explores the untold stories of several Half Life characters - taking place in a prison on the outskirts of City 17." Original Mod Created By: Mike Anderson Instructions Download and install The Masked Prisoner to sourcemods which ...

The Citizen Returns Mod Support

Created by Balim

Plot "Set in both the heart and outside of City 17, “The Citizen Returns” contains the final chapters of our citizen’s story, as well as an updated version of Part II. The story takes place shortly after a failed assassination attempt on Dr. Breen leads to...

Strider Mountain Mod Support

Created by Balim

Plot "AT 30,000 FEET… you are almost 6 miles (9.7 kilometers) above sea level. The human body is not made for these conditions. Temperatures can plummet to -60F (-51C), the brain is starved for oxygen and each step is a new experience in pure agony. It’s d...

Steam Tracks Trouble and Riddles Mod Support

Created by Balim

Info "Steam, Tracks, Trouble & Riddles (S.T.T.&R.) is a single player adventure mod, based on source engine (Orange Box) by Valve. It combines two types of game play: an adventure game with complex, 3D-interactive riddles in a fantastic environment and a s...

Spherical Nightmares Mod Support

Created by Balim

Plot "An Island that has disappeared? Nightmares that occur during your waking moments. Can you solve the mystery? The story takes place in the Half-Life universe and you take the role as Gordon Freeman. Your journey begins in an unknown location." Origina...

Slums 2: Extended Mod Support

Created by Balim

Plot "You are disorientated and lost. You regain full awareness in what looks to be a storage room in an apartment block. Work your way through a variety of environments to find your way to freedom." Original Mod Created By: Dmitriy Masaltsev Instructions ...

Silent Hill: Alchemilla Mod Support

Created by Balim

Info "Alchemilla is our attempt to build the atmosphere of the famous game Silent Hill on the Source Engine. This is not a remake of any game from Silent Hill series it is a completely original story with its own secrets to solve. This mod is primarily des...

Silent Escape Mod Support

Created by Balim

Plot "The story starts during the events of Half-Life 2. You play as on of the rebels named Shawn participation in “Silent Escape”, a plan aimed to save people from the horrors of war and send them to a safe place. But, no matter for scientific accuracy in...

Ravenholm: The Lost Chapter Mod Support

Created by Balim

Plot "Ravenholm: The Lost Chapter is a level expansion of the Ravenholm story arc that started with Half-Life 2. The story revolves around the Combine's current use of the town as a dumping ground for failed experiments carried out on the citizens of City ...

Year Long Alarm Mod Support

Created by Balim

Plot "The mod takes place between the events of Half-Life 2: Episode 1 and Half-Life 2: Episode 2, where the combine have chased Gordon Freeman to an abandoned mine outside City 17. Use everything at your disposal to dispatch the combine and escape their g...

Ravenholm Mod Support

Created by Balim

Info "The atmosphere in the original HL2 game was both interesting, and terrefying, and that is the driving force behind our choice on creating a modification on that environment alone. All maps from this modification have a very similar kind of feel of at...

PTSD & PTCS Mod Support

Created by Balim

PTSD Plot "PTSD mod let's you see the world from PTSD guy's eyes, experience memories, nightmares, memes and all sorts of stuff in this crazy world full of ptsd. Fight back the new punt leader and win back old punt!" PTCS: A Post Traumatic Christmas Specia...

Prospekt Mod Support

Created by Balim

Plot "Gordon Freeman is cornered and being overrun by soldiers in the Nova Prospekt prison; the player controls US Marine Adrian Shephard - the unsung hero - as he’s teleported in by Freeman’s Vortigaunt allies to help fight back." Original Mod Created By:...

Prospekt — Bonus Map

Created by Смайл

Looking for entertainment to kill your free time? Then these 5 puzzle maps will definitely help with that. Objective: Do not get spotted by the Combine, or you will fail the mission. Get from point A to point B. And remember: You do not have a weapon! You ...

Precursor Mod Support

Created by DaftMink 🐾

Offical Summary: Re-enter the Half Life Universe and revisit City 17 in the time before Freeman, in this fan made single-player mod. The Resistance is threatened by a decisive Combine assault, and as a wanted Resistance member you will need to fight to esc...

Omega Prison Mod Support

Created by Balim

Plot "Waiting. Waiting in a cell. For what? Escape? Torture? Death!? Perhaps it is a test. Well, if it is, prove yourself!" Original Mod Created By: iRocket & HanDeath Instructions Download and install Combine Destiny to sourcemods which is located in: Ste...

Old School Mod Support

Created by Balim

This REQUIRES EDTRebuild to run it on a server in a SourceMod install! Only the server needs SourceMod/Metamod and the plugins, clients do not. Info Half-Life² Old School by Al-Bundy in cooperation of Frere D'Arme Do you love Old FPS ? Half-Life² Old Schoo...

Nightmare House (original)

Created by Yoshi

NIGHTMARE HOUSE (ORIGINAL) This is the original 2005 Nightmare House mod, ported and now working in Synergy. Your driving to meet your family, when suddenly your car mysteriously breaks down for no reason. "Luckily", you ended up rolling right in front of ...

Mission Improbable Mod Support

Created by Balim

Plot "A Resistance listening post suddenly goes off-air and you are sent in to find out what happened to the original support crew and get the station back online. Your journey begins as a rowing boat coasts towards the landing point. Who knows what you wi...

Lost Under The Snow Mod Support

Created by Balim

Plot "You are a captured citizen who wakes up in a pod, stranded in unknown snowy surroundings, just after you were lost from a "combine-dropship-pod-container". You discover a secret underground facility that are infested by headcrab-zombies. Later you fi...

Liberation Mod Support

Created by Balim

Plot "Starting underground, you suddenly find yourself out in the open with a lot Combine soldiers attacking you. Only smart thinking and quick reflexes will save you. Dispatch the soldiers and work your way through the prison to… Well, let’s just say that...

Kill The Monk Mod Support

Created by Balim

Plot "This is an alternative story of Half-Life 2. The new adventures of Gordon Freeman. The main antagonist of the mod is Father Grigori aka Monk. He killed leader of Combines - G-Man. And now, he wants to destory all the people. If you don't want this, y...

js_coop_quest

Created by DaftMink 🐾

Map by: JoeScoma, Edit file by: DaftMink Map name: js_coop_quest_v9 (edited to resemble oc_quest_b2). To play type "map js_coop_quest_v9" in console, or select it from the create server menu. ...

Half-Life Escape Mod Support

Created by Balim

Plot "You play as a rebel who was captured by the Alliance. Can you escape from the bunker? The mod is in beta and will continue to be updated, THIS is NOT the FINAL VERSION!!! Perhaps there will be new chapters, etc." Original Mod Created By: RatemTeam Th...

Half-Life 2: Penetration Mod Support

Created by Balim

Plot "This is a single player mod (now co-op through Synergy) to Half-Life 2 about penetration of Gordon Freeman in Combine World through a portal which is in citadel of City18." Original Mod Created By: Roman Kvetkov (Ha1fer) Instructions Download and ins...

Gordon Freeman Player model

Created by Mentally Unstable Dinosaur

Are you tired of being called "Gordon Freeman" for everyone you meet, when obviously you're a rebel? You want to be the famous Freeman while playing your friends? You want to crowbar everything to death? (even striders) If you answer yes to at least 1 of t...

PTSD 2 Mod Support

Created by Balim

This REQUIRES SynFixesDev, EDTRebuild, and SynSweps to run it on a server in a SourceMod install! Only the server needs SourceMod/Metamod and the plugins, clients do not. Info "The anticipated(?) release of PTSD 2 mod, now for your little hands to grab on ...

Entropy Zero Mod Support

Created by Balim

Plot "Be the bad guy in this modification for Half-Life 2 : Episode 2 and step into the boots of a stranded Metrocop, left for dead in the abandoned City 10. Experience a time before the fall of City 17 - 11 months before the deployment of Gordon Freeman. ...

Episode 3: The Closure Mod Support

Created by Balim

Plot "This mod starts where the original Half Life 2 Episode 2 ended, with the death of Alyx's father. She became sick by the loss and layes in bed. Magnusson needs Gordon to look for Kleiner, because he has disapeared. The last time he has seen Kleiner wa...

Escape by =EX-Mo= Mod Support

Created by Balim

Plot "Another story about Gordon Freeman. Under any circumstances of force of the Alliance have seized Gordon and have thrown it in one of old prisons, somewhere at coast. But insurgents of the in a trouble don't throw!! You should run away from prison and...

Eye of The Storm Episode 1 Mod Support

Created by Balim

Plot "Picking up the story after John’s escape from Ravenholm, you will visit new locations and meet new characters as you are taken prisoner by the Combine in City 24 and are reunited with an old friend from your resistance fighter days in City 17. Now he...

Forgotten Powers-escape

Created by Destiny

You made it to the shrine finnaly,now it's time to get the hell outta here!Find your way out! Alpha version 0.02 First map: http://steamproxy.net/sharedfiles/filedetails/?id=802586403 Third map http://steamproxy.net/sharedfiles/filedetails/?id=1198...

syn_fireteam (2 maps)

Created by DaftMink 🐾

After receiving a distress signal from a nearby rebel outpost, you are to use the jeep to make your way over there and help defend them. Maps by: Tysn, Edit files by KillerB & DaftMink Map List: syn_fireteam_1_b1 & syn_fireteam_2_b1 To play type "map syn_f...

[Syn 4.3 Beta] Precursor Mod - Workshop Campaign

Created by DaftMink 🐾

Official Summary: Re-enter the Half Life Universe and revisit City 17 in the time before Freeman, in this fan made single-player mod. The Resistance is threatened by a decisive Combine assault, and as a wanted Resistance member you will need to fight to es...

Forgotten Powers-island

Created by Destiny

After whole night sailing, you find yourself on a strange island. Find your way through dangers and secrets to the shrine deep inside. The map is tested, but still in beta version. Second map: http://steamproxy.net/sharedfiles/filedetails/?id=957302671...

syn_desert_assault

Created by RiskyKen

In this map you are part of a rebel team sent into a combine base to retrieve top secret weapon development data. This map requires HL2-Episode 1 to run Note this is version beta 6 not the newest version of the map beta 9. I will create a new build soon wi...

syn_temple

Created by Zaeryn

This is a tiny temple map that I've been wanting to do for a while. Has weapons but no enemies, ideal for screenshots, machinima or whatever. Credits: Doktor haus - map Valve Software, TopHattWaffle - textures Holger Kerker, Kev Edward - candle model and t...

syn_mountaineer

Created by ottelo

Maximum size adventure map with Jump'n'Run ways. Destination: Get on this mountain and fight against the combines who want to stop you from climbing on it. There are lot of dangerous traps waiting for you :). There are 5 teleporters, you can activate them ...

Boilingpoint Depository Heist

Created by ¤ CCG: Juuzou Suzuya

Half-Life 2: Episode 1 & 2 is required for this map. SUBJECT: TIME: January 4th 2002, 9:03 AM LOCATION: Boilingpoint Depository Bank, northern US. MISSION: Extract the device from the vault. ================================ You receive a mysterious news fr...

THAT

Created by jonnyquattro

]]] An interactive art installation This 'game' has no objective, it is whatever you interpret it to be. The world is consisted of a grid of 9 maps You start in the center (5th map) and you can travel between the maps at your own leisure. Have fun, explore...

js_build_puzzle_eight_v6

Created by //evan

js_build_puzzle_eight_v6...

js_coop map pack

Created by jonnyquattro

Js_Coop Map Pack Non-Build-Puzzle map pack js_co-op_antlionhill_v1_tbr.bsp js_co-op_stone_land_v5a.bsp js_co-op_tbr_steamlab_v7.bsp js_co-op_train_lvls_v5b.bsp js_coop_2011_savedog_v2.bsp js_coop_2fort_b11_teleport_x3.bsp js_coop_2fort_teleport_p1.bsp js_c...

Research and Development

Created by ILOVEPIE

The last addon got deleted due to a synergy bug. It has been re-uploaded here. This Add-On allows you to mount Research and Development and try out the work in progress official support for this mod. Please follow the setup instructions below after install...

dr_puzzle_mario_final

Created by jonnyquattro

dr_puzzle_mario_final Map by "Dr. Kleiner" http://steamproxy.net/profiles/76561197989450450/ Finish all the puzzle parts to progress to level 7 Known Issues - Gravity guns do not respawn (pending fix) ...

syn_stadium_rm

Created by jonnyquattro

Author - Remonttimies http://gamebanana.com/members/126670 http://www.anttivainio.net Twitter MrAnaatti Original Release 2007 This is a remake of Sven Coop map: stadium3 made by Sven Viking and a Synergy version of tc_stadium_rm. There is no goal in this m...