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Learn Java and code highly-customized Minecraft plugins in 20 days (without experience):

CoreArena

CoreArena is a premium quality Bukkit plugin with destroyable arenas to bring a whole new experience to your Minecraft server in.Its unique approach is determined by:

• Realistic physical engine making arenas fully destroyable (and self-repairable when the game ends).
• Class upgrades and reward system. Can by synchronized over MySQL and BungeeCord.
• Frustration-free GUI to create arenas in under 5 minutes.
• Unique monster spawner possibilities (clickable using our GUI).
• Simple and straightforward setup with visual creation, no more complicated configs.
• Fully automated, no admin required to manage games.

You are welcome to read the CoreArena Wikipedia, where you fill find tons of information about the installation, configuring and using this plugin.

If you have any questions or bugs to report, try seeing if those can be resolved quickly by yourself. If that does not help, you are welcome to fill an issue. Please read the Getting Help the Best Way to obtain help as quickly as possible.

Get it here: https://www.mc-market.org/resources/21643/