Co-Optimus - Steam Co-Op Game Matchmaking *BETA*

Steam Co-Op Games in Common

M[A]kke

	Audiosurf Audiosurf includes the "Double Vision" character, which places two cars on a four-track-wide course. Both players are on the same screen.Control is mouse for one player and keyboard for the other, or using one stick each on the same Xbox 360 Controller.
	Left 4 Dead Fight with up to 4 other players against the impending zombie horde. Cover, heal, revive, and protect your teammates. Full drop in and drop out support including the ability to "pause" your character and let the AI take over. To enable splitscreen, refer to this forum post.
	Trine: Enchanted Edition The players take control of one of the three characters and solve the puzzle together.
	Left 4 Dead 2 Take the role of a different set of survivors as you use all new blunt force weapons, chainsaws and new guns in the sequel to Left 4 Dead. Teamwork is even more crucial as high intensity moments require greater communication to survive.To enable split screen refer to this post.
	Civilization V Research is shared between players when choosing to play on the same team. If both players research the same item, the time it takes is reduced. When one player discovered a technology, the other gets it as well.Players share the benefits of landmarks, ruins, and other discoveries on the map.Players share the map. Diplomatic options are available as well to trade resources, gold, and units.Co-Op is played in multiplayer with each player picking to join the same "team." It's assumed a balance of 3 players vs 3 AI are chosen, but you can weight it to 3vs1vs1vs1 or 3vs2 or 2vs1, etc.
	Magicka Four player co-op is available in all game modes and types including a story mode and an unlockable survival mode. While you can't drop in to a game, you can drop out and not break the session if you aren't the host.
	Shadowgrounds Shadowgrounds has co-operative multiplayer on the same computer for 2-4 players. Having more than one player in the game requires the use of gamepads. Other players will help Wesley Tyler in his alien-battling.
	Capsized Play through the entire campaign and challenge modes with a friend as you make your way off of a harsh alien world.
	Portal 2 Portal 2 will have a co-op campaign. Players take control of a robot and work through puzzles that require two players to work together to solve.
	Hamilton's Great Adventure Play as either Hamilton or the bird Sasha with a friend. Each character has a unique aspect in the puzzle solving.
	Naval Warfare Players can team up through 6 different maps.
	Beat Hazard Team up with a friend and groove out/shoot down foes to your favorite tracks. Beat Hazard Ultra DLC is required.
	Shank 2 Two players can play locally or online in Shank 2s Survival Mode.
	Serious Sam 3: BFE Team up through the campaign with up to 15 other friends for frantic, old-school shooting action.
	Trine 2: Complete Story A side-scrolling puzzle-platforming game featuring up to three players working together to complete the campaign. Three player couch co-op, online co-op, and combo co-op (i.e., a mix of couch and online co-op) is supported throughout the campaign. Each player controls one of the three heroes.
	Shank Shank has a 2 player co-op campaign with scenarios and bosses specifically designed for co-op.
	Jamestown Team up with up to four players who can choose various ships to power up.
	Dungeon Defenders Team up as one of four characters each with their own unique abilities and traps to conquer dungeons in this tower defense action/RPG hybrid.
	Awesomenauts Three players can team up locally or online and play against bots.
	Pid In Pid's local co-op mode, each player controls a single beam of his or her own. That means they have to work together to cross gaps and avoid hazards.
	Monaco: What's Yours is Mine Team up with up to four people on the same screen or online to steal everything that isn't nailed down
	Sonic & All-Stars Racing Transformed Up to four players can play through the World Tour mode together using one of the available characters. Each player gains experience for their character and only one player needs to successfully complete an event for everyone to advance.
	Resident Evil 6 Team up through the game's story with one of 6 different characters (3 stories, 2 characters each) or play the game's co-op mercenary mode with up to four players.
	Thunder Wolves Take control of a mercenary helicopter with local 2 player co-op. One player pilots while the other shoots as the gunner through the full Thunder Wolves campaign.
	No Time To Explain Remastered Two players grab guns 'n stuff and head out on a shooty adventure.
	Guacamelee! A Mexican-themed 2 player local co-op-multiplayer dimension-swapping Metroid-vania beat-em-up platformer
	Guacamelee! Super Turbo Championship Edition A Mexican-themed 4 player local co-op-multiplayer dimension-swapping Metroid-vania beat-em-up platformer
	TowerFall Ascension "Quest Mode" allows up to two players to fight NPC's instead of one another. Basically, this is a standard "horde mode" featured in many modern games. There is friendly fire that can pose a bit of difficulty if players don't communicate well. Different strategies involving ammunition and loot sharing make the game much deeper than you'd expect. The "Dark World" expansion introduces the all-new Dark World Mode - a co-op campaign for 1-4 players. Battle your way to hideous boss monsters, and face the brutal challenge of the added Legendary difficulty mode. Expand your roster of playable fighters with the undead pirate Vainglorious Ghoul and 9 more alternate archers.
	A Hat in Time Each player controls a character and can play through the entire campaign cooperatively.
	Painkiller Hell & Damnation Play through the campaign with a friend in co-op either online or locally.
	Ring Runner Co-op comes in two forms. First, local co-op allows you to play two people in a single ship and play through much of the single player game, as well as all 5 of the co-op modes. Second, online co-op allows you to play with other players in one of the game's 5 co-op modes. These modes are: - Space Defense League (SDL): think League of Legends/DOTA, minus the character leveling. Supports up to eight players - Zombie Survival: fight off waves of basic “ship zombies” with a few special “zombie” types tossed in the mix. Supports up to four players - Wave Survival: fight off waves of enemies that vary in hull, archetype, and attack strategy. Supports up to four players - Gladiator: battle through as many of the game’s bosses as you can. Supports up to four players - Spire Battle: destroy the other team’s base before they destroy yours. Supports up to eight players
	Heli Heroes In Companion Mode two players can play through the campaign together.
	LEGO Marvel Super Heroes Lego Marvel Super Heroes lets you take control of your favorite Marvel heroes with over 100 unlockable characters, including Spider-Man, Iron Man, Wolverine, Captain America, the Hulk, Thor, Black Widow, Hawkeye, Deadpool, Loki and Galactus. 2 player local co-op will be featured throughout the campaign
	Hero Siege Players team up in as one the available classes like the Viking, Pyromancer, Pirate, and More! Character progression is persistent and saved to the player.
	Goat Simulator Players will be able to play the game in a split-screen mode and wreak goat havoc on the world.
	BROFORCE Get four players together to prove how much you hate terrorism. Prove it with guns!
	BattleBlock Theater BattleBlock Theater features a co-op campaign for two online or local players. Four local players can play nine different Arena modes against bots.
	Moon Hunters Players take control of different adventurers as they work together on 5-day cycles to stop cultists while uncovering their own personalities.
	Keep Talking and Nobody Explodes One player is responsible for defusing the bomb and the other players instruct them on what to do using information from the Bomb Defusal Manual. Players just need to be able to communicate with one another, so you don't all have to be in the same room, but it is more fun that way.
	Aegis Defenders Play the entire story campaign cooperatively with a friend via drop-in/drop-out splitscreen co-op
	Horizon Chase Turbo In World Tour, you play through the campaign the same way you would when playing by yourself. You advance through countries and choose one race at a time. In each race you compete against your friends and the AI. But scoring is cooperative, meaning that you and your friends will progress through the campaign as a group. In Endurance mode, you get to play several races at random, installing upgrades as you go and scoring points individually. This is Horizon Chase Turbo's "tower mode": if none of you finish in 5th or better, it's game over.
	One Piece: Pirate Warriors 3 Two players can pick between a huge roster of One Piece characters to battle beside each other in almost every mission.
	X-Morph: Defense X-Morph: Defense includes a split screen co-op mode. All missions have different gameplay scenarios designed specifically for co-op play. Enemies attack in larger numbers and from new directions making good cooperation essential to winning. In this mode the game can be played in many different ways, one player can focus on optimizing tower placement while the other shoots at enemies, or they can both focus their firepower on the strongest attackers. Additional campaign missions are available in the European Assault DLC, and a co-op Survival mode was added with the Survival Of The Fittest DLC.
	Lost Castle Four players can team up online or locally to tackle Castle Harwood and loot the treasures within
	Human: Fall Flat Human: Fall Flat supports two players locally, or a player can act as the host for a game and create a lobby (Public or Private) for other players to join. The online mode supports up to 8 players total.
	Civilization VI In addition to traditional multiplayer modes, cooperate and compete with your friends in a wide variety of situations all designed to be easily completed in a single session. "Hotseat" local co-op is available on the PC.
	The Escapists 2 In a first for the series, The Escapists 2 offers drop-in/drop-out play offering both split screen and online play for up to four players in co-op
	Override: Mech City Brawl Gather 2 to 4 friends to engage in party co-op where each player is responsible for one part of a towering mech. Override originally supported local co-op, online co-op, and a mix of the two (combo co-op) until the servers were shut down at the end of 2022.
	Divinity: Original Sin II Divinity: Original Sin 2 has a huge story campaign with over 80 hours of gameplay. It can be played both in single-player and in co-op with up to 4 players. On the PC, the game will support up to two players locally using game controllers. The title will also support four player combo co-op, meaning two local players can be joined online by two other players. LAN play is also supported. The Game Master mode allows one player to assume the role of the Game Master and create a custom campaign for up to 4 players. This is, essentially, a tabletop RPG-style experience within a video game.
	SEGA Genesis Classics Players can team up online or on the couch in those titles that support it
	Renegade Ops Team up online with up to four people for destructive co-op action.
	The Dark Pictures Anthology: Man of Medan Play through the entire story with friends in two different ways. Movie Night Mode - You and up to 4 friends will play the story together on the couch, each controlling a different character, passing a single controller between one another. Shared Story - In this 2 player online co-operative mode, play the whole story online with a friend, making choices that effect you both.
	Baldur's Gate III Team up with friends online and on LAN through the game's campaign as well as in local split-screen (vertical).
	Gang Beasts Team up with up to three buddies locally or online in the "Waves" mode where you'll have to survive against hordes of A.I. enemies
	The Dark Pictures Anthology: Little Hope Play through the entire story with friends in two different ways. Movie Night Mode - You and up to 4 friends will play the story together on the couch, each controlling a different character, passing a single controller between one another. Shared Story - In this 2 player online co-operative mode, play the whole story online with a friend, making choices that effect you both.
	The Dark Pictures Anthology: House of Ashes Play through the entire story with friends in two different ways. Movie Night Mode - You and up to 4 friends will play the story together on the couch, each controlling a different character, passing a single controller between one another. Shared Story - In this 2 player online co-operative mode, play the whole story online with a friend, making choices that effect you both.
	Vampire Survivors In couch co-op mode, you can either continue your current game or start a new adventure. It is also possible to seamlessly switch between single and co-op play between stages, unlock achievements, etc.
	Patch Quest Two players can explore the land (and ride monsters) in the same world.