和求生之路2很像的游戏，Alien Swarm: Reactive Drop 异形丛生2在steam上免费领取

小樱

Alien Swarm: Reactive Drop extends Alien Swarm, bringing more of everything: maps, aliens, game modes, guns... And most importantly Steam Workshop support.

Tactical co-op for up to 8 players with a top-down perspective
Steam Workshop support for community maps and challenges
New co-operative campaigns
Challenges: Modifications of the game, just like Mutations in Left 4 Dead 2
PvP: Deathmatch, Gun Game, Instagib, and Team Deathmatch
Singleplayer: Play with improved bots on all our official maps
New Aliens: HL2 antlion guards and more
New Weapons: Desert Eagle, Devastator, and Combat Rifle, with more to come
Over 100 Steam achievements
Leaderboards: compete with your friends for the fastest mission completion
Improved spectating: see hacking minigames and mouse movements in real time



系统需求
最低配置:
操作系统: Windows® XP or above
处理器: Pentium 4 3.0GHz
内存: 2 GB RAM
图形: DirectX 9 compatible video card with 128 MB, Shader model 2.0. ATI X800, NVidia 6600 or better
DirectX 版本: 9.0
存储空间: 需要 4 GB 可用空间
声卡: DirectX 9.0c compatible sound card

推荐配置:
操作系统: Windows® XP or above
处理器: Intel core 2 duo 2.4GHz
内存: 4 GB RAM
图形: DirectX 9 compatible video card with 128 MB, Shader model 2.0. ATI X800, NVidia 6600 or better
DirectX 版本: 9.0c
网络: 宽带互联网连接
存储空间: 需要 6 GB 可用空间
声卡: DirectX 9.0c compatible sound card

领取地址：http://store.steampowered.com/app/563560/