Skywars is one of the 4 Minigames of Minecraft Central. It has been around since the start. It has 259 arenas and 33 maps. The maximum amount of players that can play in the same game is 12. At least five players were required to start the game before 13th May 2017. The requirement got changed to 12.
Skywars is a Minigame in which players spawn on an island. They need to gather resources with the help of supply chests. At least 1 chest can be found from every island. Some maps have a centre where there are many chests. Some maps even have enchantment tables. With your resources and weapons you bridge or ender pearls to other players' islands and try to kill them. The last player standing wins. If the time, 900 seconds, runs out, the player with most kills wins.
Update of May 13th 2017
In 13th May 2017 an update was launched to Skywars and Team Skywars. This update implemented a new joining system (no more signs), a better backend system, got a new waiting lobby (uses the same as in CakeWars and barrier blocks around the map to prevent escaping. The EXP levels based on your Credits level were removed and EXP bottles added to the chests instead, but this change got quickly reverted.
See Merchants for more information.
There are 33 maps. These are: Fortress, Pinnacle, Skynether, Sky Enix, Nightmare, Shrine, Luxury, Cakeland, Modernized, Cuniculo, Station, Aquarium, Timekeeper, Crystal Zone, Paris, Macario, Aspiring, Sky Mine, Derelict, Freeze Breeze, Sylvan, Modern Towers, Future Station, Rusted Tracks, Spire, Autumn Huts, Haven, Nordia, Candyland, Arid Sands, Meadows, Villa and Acer.
There have been more maps before but they were removed as a part of the big Skywars update in 19th February 2016. These maps were: Skyland, Skyforest, Funland, Sweetland, Siege, Arden Island, Mushy Grounds, Marioland, Holiday Season, Jungle Ruins, Unknown World and Skycastle.