Plot: Black Shades is an open-source video game developed by Wolfire Games. Originally released for PC, it was later ported to other platforms due to the source code availability. Wikipedia
Plot: Alpha Polaris is a point-and-click horror adventure game, developed by Finnish company Turmoil Games and published by Just a Game. It was released for Microsoft Windows on June 24, 2011. The game is set in a research station in Greenland. Wikipedia