Sleeping Dogs is an
open world and
martial arts action-adventure video game developed by
United Front Games and published by
Square Enix's
European subsidiary. It was originally released for
PlayStation 3,
Xbox 360 and
Windows in 2012. Set in contemporary
Hong Kong, the
single player story follows martial artist and undercover police officer Wei Shen who infiltrates the Sun On Yee
Triad organization. Gameplay focuses on Wei Shen's martial arts moves, fighting, shooting and
parkour abilities, and on gadgets that can be used for combat and exploration. Players must complete missions to unlock content and continue the story, but they may instead freely roam the game's
open world environment and engage in both legal and criminal activities. The latter may incite a police response, the intensity of which is controlled by a "heat" system. Actions such as fighting, driving and racing grant Shen statistical rewards and earn the player
achievements.
Sleeping Dogs' difficult and prolonged development began in 2008. The game was announced in 2009 as part of the
True Crime series but was canceled by
Activision Blizzard in 2011, as a result of the project's delays and budget issues. Six months later, Square Enix purchased the publishing rights and renamed the game
Sleeping Dogs, without the
True Crime license, but considered a
spiritual successor. During development, United Front staff visited Hong Kong to conduct field research for the visual environments and sound.
Upon its release in 2012, the game received positive reviews for its combat, voice acting, experience system and depiction of the city; but its camera and some animations were criticized. Within one year, the game had sold over 1.5 million copies. New outfits, missions and add-ons, as well as three
expansion packs, were released as
downloadable content in the six months following the game's debut. A remastered version, subtitled
Definitive Edition, was released in October 2014 for Microsoft Windows, PlayStation 4 and Xbox One. It features improved gameplay, setting and audio-visual quality based on community feedback. The macOS version of
Definitive Edition was released on March 31, 2016 by
Feral Interactive.
[1] The game's success spawned a spin-off multiplayer game titled
Triad Wars, which was canceled in 2015. In 2017, a live action film adaptation was also announced, with
Donnie Yen set to star as Shen.