Absolutely the best Mob / Boss plugin on the market, it was worth every penny. The Developer Kangarko is extremely responsive and talented in creating plugins. You wont regret buying this plugin! I use it for my survival server as well as a mini games server. I have MobArena with the CoreArena plugin that Kangarko also developed which works REALLY well with Boss. I highly recommend Boss as well as CoreArena for any MC server.