The concept of Tequila Works' Deadlight seemed like a great idea. Take the gameplay elements of the critically-acclaimed Shadow Complex, toss in an undead scenario during an alternate timeline, and add some cool puzzles to it. It's a shame, though, that it runs out of steam towards the end.
Taking place in the year 1986, Randall Wayne and a group of friendly survivors are in desperate need to get out of a decimated Seattle. There is word that safe haven can be found outside the town, so the group decides to head on out of there. Unfortunately Randall finds himself separated from everyone else, leaving him to fend for himself against the "Shadows" (their term for the zombies) and alone in his quest to find his wife and daughter.