Darn Blimps was a multiplayer Minecraft server that existed between 2011 and 2012, which mashed up survival mode with a post-scarcity economic model, allowing players to work if they chose to and play when they wanted to.
This allowed for a unique blend of creative and survival mode, where the creatively-oriented could construct grand temples and sprawling cities if they were willing to build them; while the rugged survivalists could still live off-the-grid and fight for their meals.
Although relatively short lived, it was a fairly large and active community for much of its existence, and is still talked about to this day.
The three versions of the Darn Blimps world are still available for download.
All are for now very dated versions of Minecraft (Java Edition), so your mileage getting these running again may vary.