For example play the game you made while adding things with other people.
This would be perfect for wip games and disaster survival games.
But there shouldn't be greifing. So thats why there should also be ranks!

Ranks
Owner - can build ANYTHING and kick/ban people!
Helper - can only kick and ban people but can build if assigned by the owner.
Members - can build stuff and also report people and can be kicked/banned by helpers or the owner
Vistors - cant build but can still report
Banned - cant join the game at all :P

alright. thats all i wanna say for now!

thats actually pretty cool