About Experiment B
Experiment B is a Minecraft Survival server listed on Minelist and hosted in United States. Java address: b.proxy.connect.experimentb.net. Last ping reported version Velocity 1.7.2-1.21.11. Current players: 1/500, checked 1 Sep 2026, 5:22, 200 ms from our monitor. Vote rank on this list: #4363.
Experiment B MOTD
Survival Roleplay PVP PVE Factions
ExperimentB is a Minecraft server aiming to recreate the full backrooms lore in-game! In this expansive
Survival Roleplay PVP PVE Factions
ExperimentB is a Minecraft server aiming to recreate the full backrooms lore in-game! In this expansive world, you fight off entities while making sure you yourself don't die in the brutal conditions in the backrooms.
- Generated worlds: Explore procedurally generated levels, such as levels 0, 1, and 2. Mine blocks, gather resources, and build bases all in custom built environments!
- Custom Items/Blocks: Find custom items to power up your character. From exploding enemies on hit, to placing a portal to another level, the server is full of unique things to find!
- Entities: Face off against the darkness of a smiler, or become friendly with a faceling. The world is full of horrors to confront!
- NPC Factions: Explore bases filled with tons of NPCs! Embark on missions to further explore the backrooms, and sell items to become the richest on the server.
- Unlocks: Power up your character by discovering new things in the backrooms! Earn perks, buffs, and abilities to make sure no entity can defeat you!
Minecraft Servers from United States
Experiment B Server
Frequently Asked Questions
Connecting to Experiment B takes about a minute: open Minecraft, add the server IP from this listing, and join on a client that matches Velocity 1.7.2-1.21.11 (or a compatible version).
Owner summary: “Survival Roleplay PVP PVE Factions ExperimentB is a Minecraft server aiming to recreate the full backrooms lore in-game! In this expansive”
Java Edition
- Copy the Java address: (port 49155).
- Launch Minecraft Java → Multiplayer → Add Server (or Direct Connect).
- Paste the address, save, then click Join.
Still stuck? See our how to join a Minecraft server guide, or ask staff on the Experiment B Discord.
Use these official addresses from the Experiment B Minelist listing:
- Java: on port 49155
Copy buttons also appear in the sidebar. Bookmark this page so friends always get the current IP if the hostname ever changes.
Last ping reported software/version string: Velocity 1.7.2-1.21.11. A version mismatch is one of the most common reasons a correct IP still fails to connect.
Experiment B is free to join from this Minecraft server list. You need a legitimate Minecraft Java account; Minelist does not charge you to connect.
If the server later sells optional ranks, those would be handled on their own site or Discord — not through a Minelist fee.
Experiment B is listed on Minelist as a Survival Minecraft server based in United States.
Additional modes/tags on this listing: roleplay, pvp, factions, pve.
From the server description: “Survival Roleplay PVP PVE Factions ExperimentB is a Minecraft server aiming to recreate the full backrooms lore in-game! In this expansive”
Compare similar worlds on our Survival Minecraft servers hub, or read the full description on this page before you invest time building.
Yes — combat is part of how Experiment B is categorized (Survival), with related tags like roleplay, pvp, factions, pve.
That usually means PvP exists somewhere on the network (war zones, arenas, or open world). Always read spawn/safe-zone rules on this page or in Discord before fighting — many servers punish combat logging or spawn camping.
Our last successful ping for Experiment B reported version Velocity 1.7.2-1.21.11. That string comes from the live server, so it is the most reliable clue when Multiplayer says “outdated client” or “outdated server”.
The owner also listed these supported clients: 1-21. Multi-version networks (ViaVersion / protocol support) can accept a range such as 1.20–1.21 even when the ping string shows one build.
On our last check, Experiment B showed 1/500 players with status Offline (checked 1 Sep 2026, 5:22), latency 200 ms from the Minelist monitor.
Current vote rank on Minelist: #4363. Rankings move as the community votes, so activity and visibility are related but not identical.
Player counts change throughout the day. Refresh this page or use the Server Status Checker for a live probe of the same address.
This Minelist listing places Experiment B in United States. Players closer to that region typically get lower ping and smoother gameplay.
Our monitor last measured about 200 ms to the server — your home ping will differ based on your ISP and distance.
If you live far away, try a short session after joining with b.proxy.connect.experimentb.net:49155 to see whether combat and building feel responsive enough for you.
Our last check for Experiment B reported status Offline (1 Sep 2026, 5:22).
That can mean a restart, maintenance, or an outage. Try again later, watch announcements on Discord, or probe the IP with our status checker.
The community Discord for Experiment B is here: Join Experiment B Discord.
Use it for rules, events, support tickets, and real-time status when the server is restarting. Staff answers there are faster than Minelist comments.
Official links for Experiment B from this listing:
- Website: experimentb.net — rules, maps, and announcements.
For account or purchase problems, Discord staff are usually the right contact after you check the store’s own support page.
Minelist only lists Experiment B — we do not run their bans, payments, or in-game support.
Contact server staff on Experiment B Discord (help / tickets / applications).
Also check experimentb.net for contact pages or status posts.
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