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As far as top down twin stick shooters go, it can be said that developers Housemarque have this formula perfected. From their expertise in the shooting genre, boasting cult favorites like planetoid twitch shooter Super Stardust to everyone's favorite top down zombie co-op shooter Dead Nation, their newest release is the culmination of all their skills packaged as an amazingly fun title known as Alienation. Also, within missions, special events will pop up from time to time, such as a massive horde of enemies, special mini-bosses, and even gateways to an alien ship for R A R E loot. There's even great NG+ end game content where players can invade the games of others for PVP matches, or explore a massive alien mothership containing a completely different style of gameplay.