Right from the get go it's obvious Dead Effect 2 is a port of a mobile game, visual clues within the interface design and puzzles make calls for placing your finger on the screen and such. The game's core systems are clearly designed around a free to play model, but thankfully on the PC version, require no monetary output. 

Set aboard the ESS Meridian (a space ship), you're tasked with going aboard the vessel and finding out what happened to the ship and its crew. The game supports up to three players online throughout the game's 20 story missions, so you can grab a few friends to help you shoot all them undead. It also has some RPG mechanics, such as weapon and character upgrades, so your team can gear up to be the most efficient killing squad in all the galaxy.