IF YOU ARE USING ONE SERVER TO RUN MANY DIFFERENT MINI GAMES INCLUDING THIS ONE PLEASE USE PerWorldsPlugin SO THAT THE CHEST BUG DOESN'T EFFECT YOUR OTHER WORLDS.
BUGS
Spectators can hit players and open chest. Fixed in v2.0 (coming soon)
Chest fill items if you open the chest, even though you aren't playing.
It says 30 minutes until you go to the lobby when its really 5 seconds. Fixed in v2.0 (coming soon)
Players that are not op can't do any /sg command while in-game. Fixed in v2.0 (coming soon)
It can sometimes say game setup incomplete after you create a arena and shut down the server, and when you start the server up again and you try to join a game and it says "game setup incomplete". If it says that just do /reload. If it doesn't then you don't have to do it.