Skywarz is a very fun Minecraft minigame, that uses animation, very selective sound and particles to express the fun while playing. Skywarz is made for Spigot and Bungeecord servers.
Download the latest version of Skywarz (see in Releases section), plug it into your plugins/ folder, reload your server and you're good to go!
Skywarz requires at least Java 11 and the Minecraft version 1.14 or newer.
For more information on how to setup arenas, what the commands, permissions and requirements are, have a look at: https://www.spigotmc.org/resources/skywarz.42739/
Skywarz internally only uses Bufig (Bukkit configuration wrapper) from myself, ORMLite and Guava & commons processing libraries.
... and spigot of course