Multiplayer online battle arena in the context of Defense of the Ancients

A player character (also known as a playable character or PC) is a fictional character in a video game or tabletop role-playing game whose actions are controlled by a player rather than the rules of the game. The characters that are not controlled by a player are called non-player characters (NPCs). The actions of non-player characters are typically handled by the game itself in video games, or according to rules followed by a gamemaster refereeing tabletop role-playing games. The player character functions as a fictional, alternate body for the player controlling the character.

Video games typically have one player character for each person playing the game. Some games, such as multiplayer online battle arena, hero shooter, and fighting games, offer a group of player characters for the player to choose from, allowing the player to control one of them at a time. Where more than one player character is available, the characters may have distinctive abilities and differing styles of play.

League of Legends (LoL), commonly referred to as League, is a multiplayer online battle arena video game developed and published by Riot Games. Inspired by Defense of the Ancients, a custom map for Warcraft III, Riot's founders sought to develop a stand-alone game in the same genre. Since its release in October 2009, League has been free-to-play and is monetized through purchasable character customization. The game is available for Windows and macOS.

In the game's main mode, Summoner's Rift, two teams of five players battle in player-versus-player combat. Each player controls a character, known as a "champion", with unique abilities and styles of play. During a match, champions become more powerful by collecting experience points, earning gold, and purchasing items to defeat the opposing team. Teams defend their base and win by pushing toward the enemy base and destroying a large structure within it, the "Nexus".

Heroes of the Storm is a multiplayer online battle arena video game developed and published by Blizzard Entertainment. Announced at BlizzCon 2010, it was released on June 2, 2015, for macOS and Windows. The game features various crossover characters from Blizzard's franchises as playable heroes, as well as different battlegrounds based on Warcraft, Diablo, StarCraft, and Overwatch universes.

Matches are contested between two teams of five players, each aiming to destroy the opposing team's main structure, known as the "Core." The first team to do so wins the match, with a typical duration of around 20 minutes. Matches take place on various themed battlegrounds, each featuring unique level designs and secondary objectives, the completion of which grants significant advantages. Every player controls a single character, known as a "hero", with a set of distinctive abilities and differing styles of play. Heroes become more powerful over the course of a match by collecting experience points and unlocking "talents" that offer new abilities or augment existing ones, contributing to the team's overall strategy.

An action game is a video game genre that emphasizes physical challenges, including hand–eye coordination and reaction time. The genre includes a large variety of sub-genres, such as fighting games, beat 'em ups, shooter games, rhythm games and platform games. Multiplayer online battle arena and some real-time strategy games are also considered action games.

In an action game, the player typically controls a character often in the form of a protagonist or avatar. This player character must navigate a level, collecting objects, avoiding obstacles, and battling enemies with their natural skills as well as weapons and other tools at their disposal. At the end of a level or group of levels, the player must often defeat a boss enemy that is more challenging and often a major antagonist in the game's story. Enemy attacks and obstacles deplete the player character's health and lives, and the player receives a game over when they run out of lives.

Netrek is an Internet game for up to 16 players, written almost entirely in cross-platform open-source code. It combines features of multi-directional shooters (such as Asteroids) and team-based real-time strategy games. Players attempt to disable or destroy their opponents' ships in real-time combat, while taking over enemy planets by bombing them and dropping off armies they pick up on friendly planets. The goal of the game is to capture all the opposing team's planets.

Developed as a successor to 1986's Xtrek, Netrek was first played in 1988. It was the third Internet game, the first Internet team game, and as of 2022 is the oldest Internet game still actively played. It pioneered many technologies used in later games and has been cited as prior art in patent disputes. Xtrek and Netrek are the oldest games of what is now called the MOBA (multiplayer online battle arena) genre.

Heroes of Newerth (HoN) was a multiplayer online battle arena (MOBA) video game originally developed by S2 Games for Microsoft Windows, Mac OS X, and Linux. The game idea was derived from the Warcraft III: The Frozen Throne custom map Defense of the Ancients and was S2 Games' first MOBA title. The game was released on May 12, 2010, and re-released as a free-to-play game on July 29, 2011. On May 5, 2015, Heroes of Newerth development duties passed to Frostburn Studios, with the development team moving over to the new company. The service ceased operations on June 20, 2022.

Following the shutdown, the game remained playable through community-run servers, most notably Project KONGOR, which achieved over 7,000 concurrent players and maintained active matchmaking and tournament support.

Dota 2 is a 2013 multiplayer online battle arena (MOBA) video game by Valve. The game is a sequel to Defense of the Ancients (DotA), a community-created mod for Blizzard Entertainment's Warcraft III: Reign of Chaos. Dota 2 is played in matches between two teams of five players, with each team occupying and defending their own separate base on the map. Each of the ten players independently controls a character known as a hero that has unique abilities and differing styles of play. During a match, players collect experience points (XP) and items for their heroes to defeat the opposing team's heroes in player versus player (PvP) combat. A team wins by being the first to destroy the other team's Ancient, a large durable structure located in the center of each base.

Development of Dota 2 began in 2009 when IceFrog, lead designer of Defense of the Ancients, was hired by Valve to design a standalone remake in the Source game engine. It was released for Windows, OS X, and Linux via the digital distribution platform Steam in July 2013, following a Windows-only open beta phase that began two years prior. Dota 2 is fully free-to-play with no heroes or any other gameplay element needing to be bought or otherwise unlocked. Valve supports the game as a service, selling loot boxes and a battle pass subscription system called Dota Plus that offer non-gameplay altering virtual goods in return, such as hero cosmetics and audio replacement packs. The game was ported to the Source 2 engine in 2015, making it the first game to use it.

Smite is a 2014 free-to-play third-person multiplayer online battle arena (MOBA) video game developed and published by Hi-Rez Studios for Microsoft Windows, Xbox One, PlayStation 4, Nintendo Switch, and Amazon Luna. In Smite, players control a god, goddess or other mythological figure and take part in team-based combat, using their abilities and tactics against other player-controlled gods and non-player-controlled minions. In most gamemodes, victory is achieved by slaying the opposing team's titan before losing their own.

The game has multiple player versus player (PVP) modes, 130 playable gods, and has a successful esports scene with multiple tournaments, including the annual million-dollar Smite World Championship. As of 2020, Smite has attracted a total of 40 million players. A sequel, Smite 2, was first announced in January 2024, and entered Open Beta in January 2025.

Tracer is the call sign of Lena Oxton, a character who appears in Blizzard Entertainment's Overwatch franchise. The 2014 Overwatch Cinematic Trailer short was her first appearance overall. An April 2016 update for the crossover multiplayer online battle arena game Heroes of the Storm added her to its playable roster, marking her first inclusion in a video game. Shortly thereafter, she appeared in the first Overwatch game, a first-person hero shooter. She again appeared in its 2023 sequel, Overwatch 2.

In the Overwatch narrative, she is a peppy and energetic pilot of British origin. A damage-class hero in-game, Tracer has low health, but is highly mobile, being able to both teleport and time travel. Those abilities were caused by an accident that left her unable to maintain a physical form in the present until her friend and fellow Overwatch agent, Winston, invented the "chronal accelerator", a device that allows her to control her own time frame.