Its Called Zombocalypse, basically 2-4 players spawn in a forest and they start with nothing, they have 5 minutes to gather supplies and make a home before waves of Zombies come and attack them. Until all the Mobs are dead a new wave doesnt start. This is a really fun sounding concept. Every game a player gains rewards, for the rounds they survived.

Another original concept is called Abstract Survival,
In abstract survival silk touch picks can pick up mob spawners, /back is enabled, people sell stuff to make money using /sell hand. The goal is to get the highest money on the server. Definitely sometjing i would play. Btw anti grief.

Comment if you would like to see this!

Me and my friend used to play on an antigrief server like this without silk spawners.. There really arent that many of these left... Its still very fun! Comment and say if you agree or if u like