LuckyGem is a vanilla survival SMP on Minecraft 1.21.11 that is aiming for long term players. The map is new so it feels like a fresh start.
It is whitelisted so you have to apply to get in. It also has Java and Bedrock cross play so more people can join together.
The server keeps things semi vanilla with some quality of life plugins. It also has Simple VC for voice chat.
PvP is not allowed and the community is described as respectful and welcoming.
