Dead or Alive 5 originally released on PS3 and Xbox 360 in September 2012. The game was an instant success with 580,000 units sold worldwide within the first week. Since then the game has seen multiple iterations released for Vita, PS3, Xbox 360, PS4, Xbox One and STEAM with cumulative shipments + downloads reaching almost 1.5 million units worldwide.
Koei Tecmo released a free to play edition of the game under the "Core Fighters" title and more than 3.5 million people have downloaded this version.
5 million units have now been sold/downloaded worldwide across the titles listed below.
DEAD OR ALIVE 5
DEAD OR ALIVE 5 PLUS
DEAD OR ALIVE 5 ULTIMATE
DEAD OR ALIVE 5 ULTIMATE: CORE FIGHTERS
DEAD OR ALIVE 5 LAST ROUND
DEAD OR ALIVE 5 LAST ROUND: CORE FIGHTERS
Players wanting a taste of what DEAD OR ALIVE 5 Last Round has to offer can play the main game content in DEAD OR ALIVE 5 Last Round: CORE FIGHTERS free of charge. PlayStation 4 players will have access to the free-to-download version via the PlayStation® Network which includes four fighters - Ayane, Hayate, Kasumi and Ryu Hayabusa - and almost every game mode will be available.
Source: Koei Tecmo & ZhugeEX