they are blocked from capturing the opposing team's control point and the team must wait until the time limit is up and the accessible capture points change. A team wins by capturing all the control points. Other game modes These modes are not categorized with the other modes, and instead have their own separate sections in the game. Halloween Mode is a special mode that is enabled during the Halloween season, and allows the players access to more than 20 maps, Halloween-exclusive cosmetics, and challenges. For example, Halloween 2012 included a difficult Mann vs. Machine mission involving destroying more than 800 enemy forces. Owing to popular demand of the Halloween events, Valve later added the Full Moon event, an event that triggers around every full moon phase throughout the year, which allows players to equip Halloween-exclusive cosmetics. In 2013, Valve introduced an item called Eternaween, and upon use, allows players of a specific server to use Halloween-exclusive cosmetics for 2 hours. Mann vs Machine, also known as MvM, is a cooperative game mode where players must defend their base from waves of robots modeled after all nine playable classes, and slow-moving tanks carrying bombs. Robots and tanks drop a currency referred to as Credits upon their death, which players can use to buy upgrades for themselves or their weapons. The players win upon successfully defending their base from the bomb until the last wave. A paid version of this game mode called "Mann Up" is also available, where players buy tickets to play "Tours of Duty", a collection of missions with the chance to win unique cosmetics and weapon skins upon completion. Offline Practice Mode is just like any other multiplayer match, but it only consists of the player and bots. The number of bots, their difficulty, and the map can all be adjusted to a player's preference, though only a select amount of maps are available to play. Training Mode exists to help new players get acquainted with basic controls, and teaches them the basics of four of the nine classes. It uses wooden dummies and bots to teach players the basic mechanics of classes and the game. Competitive play Team Fortress 2 is played competitively, through multiple leagues. The North American league, ESEA, supports a paid Team Fortress 2 league, with $42,000 in prizes for the top teams in 2017. While formalized competitive gameplay is very different from