This is a Spleef Arena I originally built for my server, PandaCraft.  It's futuristic-themed and contains 4 separate arenas connected to a central lobby. Above the arenas is a glass viewing deck. This Spleef Arena is designed to work with most Spleef plugins and does not function on it's own. With some modification, it can probably be used without a plugin, but I recommend using plugins for ease and simplicity.