可以和朋友在线一起玩的Difficult游戏共 583 款，包括Half-Life、Resident Evil 3和TEKKEN 7。
全部游戏: 24
Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
Jill Valentine is one of the last remaining people in Raccoon City to witness the atrocities Umbrella performed. To stop her, Umbrella unleashes their ultimate secret weapon: Nemesis! Also includes Resident Evil Resistance, a new 1 vs 4 online multiplayer game set in the Resident Evil universe.
Discover the epic conclusion of the long-time clan warfare between members of the Mishima family. Powered by Unreal Engine 4, the legendary fighting game franchise fights back with stunning story-driven cinematic battles and intense duels that can be enjoyed with friends and rivals.
In the face of certain death, we rise. Team up and embark on a journey to the ends of hell to unlock your past and escape your living nightmare in CODE VEIN.
基础版支持双人本地合作；Synchrony扩展本地人数至4人，并加入最多8人的在线模式。每一步都要跟上音乐节拍。
Descenders is extreme downhill freeriding for the modern era, with procedurally generated worlds, and where mistakes have real consequences. Will you lead your team to glory and become the next legendary Descender?
Build and power up the ultimate version of your favourite DC legends in INJUSTICE 2. This is your Legend. Your Journey. Your Injustice.
A spy-chicken tries to save the world from doom in this runner/shooter game that has a little bit of everything with a touch of chicken and anime girls on top. Run for your life in 6 different worlds and shoot your way through tons of enemies until you become a legend.
Never Split the Party is an ultra social rogue-like! You're one of four adventurers joining together to explore a procedurally generated dungeon, amass powerful upgrades, and cooperate with your fellow adventures to conquer and crush the evil dungeon champions!
Fear Therapy, is a multiplayer(1-4) and single player psychological horror game.Try to complete the quests and leave the horror house before it is too late! Satan getting angrier every second and nothing holding it back.
Redout is a tribute to the old racing monsters such as F-Zero, WipeOut, Rollcage, and POD. It is designed to be an uncompromising, fast, tough and satisfying driving experience, soaked in that vertigo that stands at the core of the arcade racing genre.
Hack and slash? Check. Twin-stick-shooter? Check. 4 player coop to slay hordes of aliens & bosses with your friends? Check. Skills, upgrades, weapons, gears, talismans and more to make you stronger? Check. Wake up, bounty hunter. We have a mission for you. Time to clean up the scum of the galaxy.
The 3D online multiplayer game of social deduction and mischief, inspired by medieval politics and the Werewolf/Mafia (1986) genre. Gather 'round the tabletop, uniting allies of the realm with strategy to distinguish friend from foe.
Fast-paced football game without a referee on the pitch and with crazy super-powers! It may not look serious, but we guarantee, that it is. Kopanito’s match engine is well-balanced and entirely skill-based.
The original epic introduction to the eternal KUNG FURY beat ‘em up saga. New stages, and the Hackademy. Both THE ARCADE STRIKES BACK and the A DAY AT THE BEACH campaign.
AROUND EVERY CORNER. Face against stealthy antagonists that will take advantage of your expectations.
FORCED is a challenging 1-4-player game with co-op at its heart! A mix of tactical arcade action, RPG elements and puzzles will forge you and your friends together. As slaves in the toughest gladiator school of them all, you will face a plethora of unique trials - designed to be your death!
Sneak Thief is a first person, shooter, strategy, stealth and puzzle game that lets you choose how you want to play. Use your wits and expertise to setup and perform heists whether that be by using brute force to smash your way through or by getting away without making a sound.
DARKSBURG is a co-op roguelite in which you must escape a procedurally generated medieval city overwhelmed by undead forces. Fight alongside up to 3 friends, overcome the revenants and get out while you can...
Saviors brings the best bullet hell experience you can find on Steam. Play through 18 challenging stages in this ultimate test of tactics and reflexes.
Survisland is a super hardcore sandbox survival game that pays great attention to restoring the real survival experience. The character has rich and realistic actions and reactions to , and the process logic of making props is no different from reality.
Topple Tactics is a physics-based multiplayer tower defense game where one huge player controls the map by placing towers and using abilities, whilst the little players level up their stats and equipment to reach the end of the map and defeat the huge player!