Metro 2033 Redux, an underrated horror shooter that’s garnered quite a cult following, is now available to claim and keep for free on PC. The Metro series has long existed on the fringes of pop culture, as 4A Games’ titles have pulled in plenty of critical acclaim and yet have never become mainstream hits like genre titans Resident Evil or Bioshock. Fortunately, the series has performed well enough to establish an entire trilogy and a VR spinoff, so those who have yet to explore the irradiated tunnels of the Metro have plenty of content to enjoy.