Black Ops 3 is a first-person shooter video game developed by Treyarch and published by Activision. It was released in 2015 for Microsoft Windows, PlayStation 4, and Xbox One, and later for PlayStation 3 and Xbox 360. The game is the twelfth installment in the Call of Duty franchise and the fourth entry in the Black Ops sub-series.

The game is set in a dystopian future where the world is constantly at war. Players take on the role of soldiers who are part of an elite team of operatives called the Black Ops. The game features a campaign mode that can be played solo or cooperatively with up to four players. It also has a multiplayer mode and a zombies mode.

In the campaign mode, players take on the role of a character called "Player," who can be customized in terms of gender, appearance, and abilities. The campaign is set in the year 2065 and follows the story of a group of soldiers who are trying to stop a global conspiracy that threatens the world.

The gameplay in the campaign mode is similar to previous games in the series, but with a few new features. The game introduces a new movement system that allows players to wall run and perform power slides. This adds a new level of verticality to the gameplay, allowing players to traverse the game's environments in new and exciting ways.

The campaign mode also introduces a new feature called Cyber Cores, which are special abilities that players can use to enhance their combat effectiveness. These abilities include the ability to hack enemy drones, create holographic decoys, and control the minds of enemy soldiers.

The multiplayer mode in Black Ops 3 is fast-paced and intense, with a variety of game modes to choose from. The game features a new Specialist system that allows players to choose from a variety of different characters, each with their own unique abilities and weapons.

The multiplayer maps in Black Ops 3 are well-designed and offer a good mix of open areas and tight corridors. The game also introduces a new weapon customization system that allows players to customize their weapons with a variety of different attachments and camouflages.

The zombies mode in Black Ops 3 is a fan-favorite and offers a unique take on the classic zombie survival genre. The mode features a new storyline, new characters, and new enemies. The gameplay is challenging and requires players to work together to survive waves of zombie attacks.

Overall, Black Ops 3 is a well-designed and enjoyable game that offers a good mix of single-player and multiplayer content. The game's campaign mode is engaging and offers a good mix of storytelling and action. The multiplayer mode is fast-paced and intense, and the zombies mode offers a unique take on the classic zombie survival genre. If you are a fan of the Call of Duty franchise or first-person shooters in general, Black Ops 3 is definitely worth checking out.