可以和朋友在线一起玩的2D · Difficult游戏共 269 款，包括Revolution Ace、Rayman® Origins和Realm of the Mad God Exalt。
全部游戏: 24
A deep, tactical shoot'em up. With every takedown, you’ll earn cash and xp to upgrade your ship and unlock new abilities. Online and local co-op. Unique versus mode. Realistic physics and water simulation.
Leap into a beloved platforming adventure that moves like a living cartoon. Punch, glide, and explore 60+ levels across the Glade of Dreams, solo or with up to three friends in local co-op.
和朋友一起进入 Realm of the Mad God Exalt，参加人潮涌动的在线首领战、探索分支地牢，并从19个职业中选择。角色阵亡后会永久消失。
Giana Sisters: Twisted Dreams is a blistering hardcore platformer with contrasting worlds.
Choose between different factions, with their own set of expendable soldiers, mechas, and weapons. Protect your brain, mine gold, and destroy the enemy cortex in his bunker complex!
和最多七位好友一起，展开一场对抗两个 AI 帝国的长期策略战役。扩张能壮大抵抗军，但摧毁敌方关键设施也可能引来更多注意。
A turn-based online fantasy card game. No character leveling, no grinding, no deck building - just 100% skill-based and fast-paced card battles!
指挥六个世界区域之一。雷达、舰队、轰炸机和核导弹发射井让 DEFCON 成为一场紧张的联盟博弈，每个人都想尽量少输。
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。
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!
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.
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.
Jets'n'Guns 2 is a side-scrolling space shooter with insane levels of action and destruction. Travel the galaxies and unleash an arsenal of the deadliest weapons and devices to save the universe from its inevitable doom.
Chip destructible bosses apart pixel-by-pixel in this twin-stick bullet-hell shooter.
Welcome to the Deep: Pixelart platformer indie game located deep inside caves. You are a cave explorer who accidentally falls in a pit which leads to a big cave system. After some exploration, you find remains of an old civilization that used to live there and decide to explore it a little further.
Eugene must battle aliens and the undead in search of a truck rim, as it seems to be his ticket home.
A Heroic-Parody tactical RPG combining dungeon crawler’s gameplay and turn-based fights. Dive in an off-beat universe, manage your team and craft mighty gear to equip them! Build your own dungeon by hiding traps and monsters in your galleries, then challenge other players to clean it!
Dramatic Stylish 2D Fighting Action 「UNDER NIGHT IN-BIRTH Exe:Late」 now on Steam!
Classic side-scrolling gameplay is reporting back for duty with Bionic Commando Rearmed, a remake of the classic NES game, out now on PC.20 years after the 8-bit classic was released, Bionic Commando Rearmed recreates the world of the original with a complete "2.5D" visual revamp.