Includes Source SDK Games

Discover the best co-op games on Steam. Access estimated total revenue, median sales per game, saturation levels, and top-performing titles to benchmark your project.

Games with Includes Source SDK

Explore 103 games featuring includes source sdk

A Day For A Kitten
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A Day For A Kitten

People who loves cat maybe need this game,I hope you like it! The Player acts as a cat.You can eat,grind your paws,love and work in garden,street or your house. At the same time,as the descendants of Yi Meow Meow,looking for stolen crystal and risk of RPG, to the different elements of the area received a variety of magic and unlock the...

Lest - Deluxe 24
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Lest - Deluxe 24

Play a Surreal and Abstract game of Hide and Seek across abstract realities watching as your beloved home falls into decay as you try desperately over and over again to hunt down your target through the stages of Denial, Guilt, Depression, Resentment, and Acceptance.

HIGhSCORE
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HIGhSCORE

HIGhSCORE is a 2D platform jumper with rogue-lite elements where players collect items to boost their attributes, score higher combos and reach more points. Unlock new features and customize your character as you level up. Compete with other players on the online leaderboard in singleplayer mode.

City of Ages: Picture Supportive Text MUD (server and client included)
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City of Ages: Picture Supportive Text MUD (server and client included)

Two windows applications install to any Windows Computer: Ansi compliant telnet text MUD Server and Client and their VB6 source code, heavily SQL coded with support and admin commands. I run my server on a 1000Mhz x 2 processor 7nm HP fanless laptop.

KnightOut
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KnightOut

A local party brawler for 1 - 4 players where fast, chaotic combat meets castle building. Fight solo or in couch co-op, using melee and ranged weapons while building and destroying castles with traps and defenses.

Block Shock
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Block Shock

Experience the most addictive retro block game like never before. With 12 all-new levels, you must use your skill to win. Can you beat the game, or will you suffer from block shock?

Infommi
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Infommi

Fight against a wave of monsters and bullet hell bosses with multiple characters of your choice that have different abilities to help you get to their Ultimate Master. Are you ready to take them on?!

Mage's Legacy
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Mage's Legacy

In Mage's Legacy, you play as a brave mage who fights monsters, explores mysterious areas, and uses magic to overcome challenges. Bringing along your familiars, you will search for treasures and solve mysteries to uncover mystical stories and the ultimate secrets of this magical world.

Wukong Fight in Kaoria
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Wukong Fight in Kaoria

This is a single player action adventure game that includes mythological themed character actions and role-playing, You can use regular attacks and skills, spells, such as magic, celestial phenomena, and body fixing spells, to Fight and defeat the enemies you encounter.

Squigley
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Squigley

Traverse and experience a massive, cohesive 2D world as Squigley. Use your wits, resources and unique movement mechanics in order to explore this dark digital world.

Retaliation: Enemy Mine
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Retaliation: Enemy Mine

Retaliation: Enemy Mine offers challenging reasoning in a fast, easy and greatly enjoyable format, with the mission of making the spirit of wargaming immediately available to everyone, casual gamers and seasoned strategists alike.

THE Z LAND : FPS SURVIVAL
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THE Z LAND : FPS SURVIVAL

The Z virus infected the planet, and you are one of the last survivors! Alone or in groups you will have to survive in a hostile world populated by living dead!

Sol Galaxy Defender
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Sol Galaxy Defender

Third Person Perspective arcade game. Defend your base against hordes of aliens intent on taking over our Solar System.

Trains & Things
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Trains & Things

Build a logistics company from the ground up in this real time multiplayer focused economic strategy game

Unknown App
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Unknown App

Survive the fog-filled ruins of Murino. Play as Drun and Ch, uncover Mellstroy’s experiments, and escape—or destroy—the creeping Fog before it consumes everything.

Lost Squad
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Lost Squad

Lost Squad — fan-made Source Engine based game in Half-Life® 2 universe about what happened to Barney Calhoun after Half-Life® 2: Episode One events and why he was not in Half-Life® 2: Episode Two

Infestus
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Infestus

A Kingdom in turmoil, a rising darkness in the North, will you take on the challenges ahead?

Momentum Mod
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Momentum Mod

Source movement speedrunning at its finest. Momentum Mod centralizes and improves upon various community movement game types from various Source games. Play user-created maps, climb the ranked leaderboards, and become a master of each movement discipline.

Battle For It All
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Battle For It All

Battle For It All is a survival Battle Royale mixing modern military combat with sci-fi mayhem. Loot, fight, and outplay enemies in relentless matches where only the strongest survive.

Inbound
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Inbound

Inbound is a multiplayer Third person cover based tactical shooter that aims to bring a authentic experience to players in various environments. It brings players into a familiar 5v5 based environment where players will be able to take part in a range of gamemodes in different maps.

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