It seems releasing the updated Metro Redux was a great business idea. Deep Silver has now announced more than 1.5 million sold Redux games - either Metro Redux or the separate Redux versions (Metro 233 and Metro: Last Light) - which is actually more than they sold of the original Metro: Last Light.
This is of course highly impressive and well deserved, since they are both excellent games. If you have an Xbox 360 (it won't be the Redux versions, but still might be worth it) and/or Xbox One and still haven't played them - they are on sale now on Xbox Live.