The original Pathologic, released back in 2005 by Russian developer Ice-Pick Lodge, is one of the most unique and interesting games ever made. I reviewed it five years ago and had a lot of high praise for it. The legacy of the original game is so strong that Ice-Pick Lodge took to Kickstarter a few years ago planning a remake that would fix some of the original's critical problems while re-imagining and improving many of the story elements and gameplay mechanics. As part of the process in developing the new version, they've recently released a free playable demo called The Marble Nest, which consists of a stand-alone scenario meant to showcase some of the game's more prominent gameplay mechanisms while condensing the full game experience down to two hours.
For the uninitiated, Pathologic is a type of survival-horror adventure game played in first-person, in which you take the role of one of three different healers who have arrived in a strange town with a bunch of bizarre and mysterious customs just as a deadly plague breaks out. The game takes place over the course of 12 days, with the town changing dramatically as the plague spreads and more and more people become infected. Each day comes with a main quest that must be completed while the clock continues to tick, leaving you a limited amount of time each day to complete your tasks. Meanwhile, you have to manage your own condition on various statistical gauges, which involves scrounging the environment for resources and manipulating a fickle economy where sometimes your only hope for survival is to sell your only weapon for a few slices of bread.
The Marble Nest maintains all of these ideas, but trims some of the more complicated survival systems and economy management down while putting you in a scenario that spans only one day. In it, you wake up some time after the plague has already wiped out most of the population, after your final quarantine zone has been breached. With seemingly all hope lost, you watch as the city collapses around you, and then the game flashes back to 14 hours prior, giving you a chance to possibly prevent the catastrophe from happening, although you'll most likely fail and everyone will die horribly, as is the true spirit of Pathologic.

