Team Fortress 2 is a free-to-play team-based first-person shooter (FPS) multiplayer video game.
Like its predecessors, Team Fortress 2 is focused around two opposing teams, Reliable Excavation & Demolition (RED) and Builders League United (BLU) competing for a combat-based principal objective. Players can choose to play as one of nine classes in these teams, each with his own unique strengths, weaknesses and weapons. Although the abilities of a number of classes have changed from earlier Team Fortress incarnations, the basic elements of each class have remained, that being one primary weapon, one secondary weapon, and one melee weapon. The game was released with six official maps, although 25 extra maps, 9 arena maps, and four training maps have been included in subsequent updates. In addition, a number of community assembled maps have been released.
Team Fortress 2 is the first of Valve's multiplayer games to provide detailed statistics for individual players. They include the time spent playing as each class, most points obtained and the most captures or objectives achieved in a single life. Persistent statistics tell the player how he or she is improving in relation to these statistics, such as if a player comes close to his or her record for the damage inflicted in a round. Team Fortress 2 also features numerous "achievements" for carrying out certain tasks, such as scoring a certain number of kills or completing a round within a certain time. New sets of class-specific achievements have been added in updates, which add new abilities and weapons to each class once unlocked by the player. This unlockable system has since been expanded into a random-chance system, where the player can also obtain the items simply by playing the game.