<P> Tom Clancy's Rainbow Six Siege is a tactical shooter video game developed by Ubisoft Montreal and published by Ubisoft . It was released worldwide for Microsoft Windows, PlayStation 4, and Xbox One on December 1, 2015 . The game puts heavy emphasis on environmental destruction and cooperation between players . Players assume control of an attacker or a defender in different gameplay modes such as hostage rescuing and bomb defusing . The title has no campaign, but features a series of short missions that can be played solo . These missions have a loose narrative, focusing on recruits going through training to prepare them for future encounters with the White Masks, a terrorist group that threatens the safety of the world . </P> <P> It is an entry in the Tom Clancy's Rainbow Six series and the successor to Tom Clancy's Rainbow 6: Patriots, a tactical shooter that had a larger focus on narrative . However, Patriots was eventually cancelled due to its technical shortcomings, and the team decided to reboot the franchise . The team evaluated the core of the Rainbow Six franchise and believed that letting players impersonate the top counter-terrorist operatives around the world suited the game most . To create authentic siege situations, the team consulted actual counter-terrorism units, and looked at real - life examples of sieges . Powered by AnvilNext 2.0, the game also utilizes Ubisoft's RealBlast technology to create destructible environments . </P> <P> Announced at Electronic Entertainment Expo 2014, it received four nominations from Game Critics Awards including Best of Show . The game received a generally positive reception from critics, with praise mostly directed to the game's tense multiplayer and focus on tactics . However, the game was criticized for its progression system and its lack of content . Initial sales were weak, but the game's player base increased significantly as Ubisoft adopted a "games as a service" model for the game and subsequently released several packages of free downloadable content . The company also partnered with ESL to make Siege an eSports game . Two years after the game's initial launch, the game had 25 million registered players . </P> <P> Tom Clancy's Rainbow Six Siege is a first - person shooter game, in which players control an operator from the Rainbow team . Different operators have different nationalities, weapons, and gadgets . The game features an asymmetrical structure whereby the teams are not always balanced in their ability choices . The Counter Terrorism Units (CTUs) available for play include the FBI Hostage Rescue Team, the British SAS, German GSG - 9, Russian Spetsnaz and French GIGN, each of which has four operators per unit (other units were later added through downloadable content, see below). Players also have access to a "Recruit" operator who can choose from a more flexible assortment of equipment at the expense of having no unique gadget . Players pick an operator from any unit before a round starts, and are not allowed to change operators during a round . An in - game shop allows players to purchase operators using the in - game currency, "Renown", which is earned at the end of matches from actions performed in - game . The different gameplay modes award renown at different rates, with ranked matches offering the largest renown multiplier potential per match . Renown can also be affected with the addition of "boosters" which give the player a 100% increase in all renown earned for 24 hours (real time not play time)... Renown can be used to purchase weapon customization options, which allow players to put attachments such as silencers and scopes on their weapons . A premium credit, known as "R6 credits" can also be purchased using real world currency to get operators quicker in - game, or other cosmetic . </P>

Is rainbow six siege a two player game