War Thunder is a massive free-to-play WWII MMO available on both PC and soon-to-be PS4 (as a launch title). Celebrating their game, Gaijin Entertainment has released a brand new CGI-trailer that "encompasses our vision of the game."
For those unfamiliar, War Thunder offers "varied PvP-experiences where host of aircrafts, ground vehicles, and naval forces are locked in full-scale global conflict over WWII theaters of war."
War Thunder currently boats more than three million players on PC. When it launches on PS4, players on console or PC will be able to play against one another, regardless of platform. This cross-platform compatibility was listed as one of the reasons War Thunder is not yet being offered on the Xbox One.