PvE stands for "Player versus Environment" and is a term used in both single-player and online games, particularly MMORPGs, CORPGs, MUDs, other online role-playing video games, and survival games to refer to fighting computer-controlled enemies, in contrast to PvP (Player versus Player). In PvE environments, players work against non-player characters/monsters, or NPCs, to accomplish tasks. PvE worlds do not have public or open-world player vs. player combat, but may have specific areas or encounters where PvP combat might occur. PvE can come in many forms in gaming, such as fighting against a boss character in an MMO game or a smaller addition of what’s available to players in FPS games. While it varies from game to game, most titles will offer some form of PvE and PvP to players.