可以和朋友在线一起玩的独立（Aliens）游戏共 83 款，包括ToeJam & Earl: Back in the Groove!、X-Morph: Defense和DG2: Defense Grid 2。
全部游戏: 24
ToeJam & Earl: Back in the Groove! is a mash-up of the very best features of the classic console games with a ton of fresh improvements! Explore Earth as funky aliens from planet Funkotron trying to find your missing ship pieces to get back home in this casual co-op roguelike.
Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.
和一位朋友并肩守护能量核心，在全面协作的 Doubles 与更具竞争性的 Coordinated Defense 之间选择，可在线或同机游玩。
Signs of Life is a sci-fi survival sandbox platformer with a combination of procedurally generated and hand-crafted content. You'll explore mysterious locations, mine blocks for resources, and meet strange (and some familiar) creatures, some of which don't even want to kill you and eat your corpse.
《Sanctum 2》把塔防建造与第一人称射击结合起来，支持最多四人在线合作战役。你和朋友要守护产氧核心，布置角色装备，并可在完成战役后继续挑战生存模式。
A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!
在Serious Sam 3: BFE的埃及战役中合作作战：线上最多16人，或本地分屏最多4人。
最多16人在线合作闯过街机风格FPS战役，也可以启动Fusion 2017，与最多4人在本地分屏游玩。
Brace yourself for a brand new action-packed Open World. Explore a huge world to gather materials for gear and defenses. Use everything at your disposal to defend your bases and defeat hordes of hostile monsters. Play solo or up to 8-player online!
Fire up your ray guns, crystal swords, and laser whips, and get ready for thrills and chills! With three incredible movie stars playing out decidedly B-level sci-fi exploits, Dick Starspeed, Scarlet Nova, and Robot will have you ready to jump off the side of the tower—right into adventure!
A 1-8 player co-op sci-fi looter horror game that takes place on a mysterious asteroid belt where players must complete contracts by traveling to exotic planets to kill creatures, find loot, and/or farm planetary materials that they must return to an ominous figure named Sketchy.
最多16名玩家可在线对抗Mental的怪物军团；通过Serious Sam Fusion 2017开启本地分屏合作。
The 2D side-scrolling shooter from The Behemoth is back! With your mighty blaster and a group of mysterious kids by your side, destroy the agency and reclaim your spaceship!
"Different realities, different rules, but always fun". In the multiplayer game Cartoon Strike, each map offers a different gaming experience. Players can enjoy a few minutes of fighting in the WWII, followed by a few minutes in the present, future or even funny mode.
Plan the train route for the universe's most awkward space colony!
8-Bit Invaders! is a fast-paced, retro Real-Time Strategy game for the PC. Control the military might of the Galactic Marine Corps or Invade with the devastating power of the Cranioids! Mine, Build, and Fight your way to victory! Conquering the Multiverse was never so easy.
Incredibly dynamic turn-based strategy, reviving the traditions of the old school tactics. Lead a team of the most desperate fighters, destroy alien monsters and uncover the secrets of the lost planet.
Join the battle to save earth from aliens and robots. Choose to play on the side of humans or aliens in battle. 1. Play alongside up to 50 online players 2. Choose various levels 3. Play in various modes such a s capture the king, rush, team deathmatch, conquest.
Road to Eden is a third-person multiplayer survival coop game, set within the post-apocalyptic ruins of a world destroyed by an alien invasion. You wake up at the side of the road with no memory and must team up with other survivors to make the long and dangerous journey to Eden.
Space RTS with base building and ship customization. Personal passion project. More than 200 available ships, weapons and modules to design your fleet with. Contains a small campaign, several single and multiplayer game modes and a coop game mode. Also contains Wave defense!
Everything in Tormentor❌Punisher can be killed in one hit, from bosses to yourself. Bosses conjure traps to make the arena hellish. Demons adjust to your play style and punish you. Perform combos on enemies and gain cool upgrades. Reload your machine gun by firing your shotgun. Let's do this!
Mist Slayer is an action Roguelite game. You are a time traveling hero, called to aid in a mystical war, and armed with unique weapons and skills. Face down amazing enemies in parallel universes, collecting various power-ups, and exploring as you go. Play alone or team up with friends.
Kallax is a chaotic furniture-building 2 to 6 players co-op game in which only one player can read the instruction manual at a time. Experience what should have been a one person's job and lose friendships forever.
EXOME is a co-op sci-fi survival shooter that blends wave-based survival with open-world exploration. Battle hordes of aliens, upgrade your arsenal, and uncover the hidden truths of the deep forest. Will you face it alone or bring your friends along?