[Server Help] I need creative game mode ideas!]

Hey guys, I'm creating a server and I want to make it unique and not like everyone else. I may say myself its hard to find a new different idea. Post your idea down below and if it requires a custom plugin then please say something.

You don't have to use this application but it is a helpful one

About game mode
What it does:
What makes it cool
Why will players stay:
Does it need a costume plugins
What other plugins are needed?

I really appreciate it. Really do. Thank you all