Wiki
Unstable SMP Wiki
Updated
About this wiki
Unstable SMP is a public Minecraft survival multiplayer server running Paper 26.3 with up to 14,000 player slots. There is no whitelist and no application, so the wiki is here to help new players find their way around rather than to gate access.
Start with the server IP page if you have not connected yet, then come back for the world details.
World locations
All locationsSix landmarks come up constantly in player conversation and video. Each has its own page with what it is, why it matters and how to get there.
Capital City
The tallest build in the world map and the most recognisable landmark on the server. The main tower rises far above the surrounding skyline and is visible from spawn.
Read more LocationHighwater City
A dense coastal city built up a cliff face, with layered roads, docks and a harbour district that connects to the water routes.
Read more LocationHighwater City Cave
The cave network beneath Highwater City. It connects the underground routes and is one of the main mining and travel corridors on the server.
Read more LocationClownPierce Castle
A castle build from the ClownPierce set, popular as a mid-game base location because of its defensible footprint and surrounding open ground.
Read moreGameplay systems
Survival and progression
Standard survival progression applies: gather, craft, build, and progress at your own pace. There is no class system and no prestige system competing with survival - you progress the way you would in vanilla, just among 14,000 other players.
Trading and the economy
There is a player-run economy centred on Merchant City. Stalls along the main routes trade materials, gear and services. Prices are set by players, so there is real variation between stalls and between visits - it is worth comparing before you sell a large stack of anything.
PvP
PvP is allowed. Fights are normal Minecraft fights with no damage modifiers. Using a client to win one is a ban offence - see the rules.
Base building
There is no enforced base protection, so choosing a defensible location matters. ClownPierce Castle has an enclosed footprint with open ground around it, which makes it a common early base. Capital City is prestigious but exposed - a landmark to live in is not the same as a landmark to hide in.
Travel
The map is large, so travel is part of the game. Highwater City's cliff roads are built for fast movement between districts, and the cave network beneath it is the main underground corridor for mining sessions. Bring a bed and torches on long trips.
Quick reference
| Detail | Value |
|---|---|
| Server IP (Java) | unstablesmp.io |
| Supported Java version | 1.21.1+ |
| Server software | Paper 26.3 |
| Player slots | 14,000 |
| Whitelist required | No |
| Cost to join | Free |
| PvP | Allowed |
| Cracked clients | Not allowed |
Quick Answer
Official IP: unstablesmp.io for Minecraft Java Edition. No port needed. Discord: https://discord.gg/unstable-network.