I found a hardcore survival SMP called LUMI HARDCORE and it is mostly vanilla with one big rule. You only get one life.
If you die you do not come back right away. You end up in an infirmary until the next reset and there are no revives.
The world resets every 60 days so each season uses a brand new seed. That means nobody keeps a huge head start for long and everyone gets a fresh start together.
It is whitelisted so you have to apply to get in. It also supports both Java and Bedrock since crossplay is enabled.
One Life Hardcore SMP Season Two
Fresh Modded Kingdom Starting Soon
Nexxus Survival: Economy, Land Claiming, Auction House & More!
Nexxus Minecraft Server
Key Features Economy, land claiming, auction house, quests, skills, jobs, player warps, custom items, seasonal crates Gameplay Mechanics Survival mode, resource gathering, quest completion, player interaction Community Aspects Active player base, upcoming events, community-driven development Server Website play.nexxus-craft.com FAQ
What is Nexxus Minecraft Server?
Nexxus is a new survival server with various features such as economy, quests, skills, and custom items.
How can I join the server?
You can join the server by connecting to play.nexxus-craft.com in your Minecraft client.
Are there any special events on the server?
Yes, Nexxus hosts seasonal events and has many crates in development for players to enjoy.
Nexxus Survive & Thrive
Nexxus
Welcome to Nexxus! A cool new survival server with stuff like money, claiming land, auctions, quests, skills, jobs, warps, special items, and gear! They’re also working on seasonal events and lots of crates. The world is fresh with lots of stuff to do and more coming soon. Come play with us today!
play.nexxus-craft.com