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Unstable SMP Wiki

Everything about the public survival server at unstablesmp.io - locations, gameplay systems and how the world works.

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 locations

Six 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.

Gameplay 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

Unstable SMP server reference
DetailValue
Server IP (Java)unstablesmp.io
Supported Java version1.21.1+
Server softwarePaper 26.3
Player slots14,000
Whitelist requiredNo
Cost to joinFree
PvPAllowed
Cracked clientsNot allowed

Quick Answer

Official IP: unstablesmp.io for Minecraft Java Edition. No port needed. Discord: https://discord.gg/unstable-network.