2b2t

2b2t
Logo in use since 2022
Other names	2builders2tools
Release	December 2010 (December 2010)
Founder	Hausemaster
Platform	Minecraft: Java Edition (version 1.21.4, cross-play with Minecraft: Bedrock Edition)
Size	~100 TB(based on map size ~80 TB ± others)
Type	Minecraft server
Website	www.2b2t.org (archived) 2b2t.org (server)

2b2t (2builders2tools) is a Minecraft server founded in December 2010. It is the oldest and most infamous "anarchy server" in the game. The server has almost no rules, and players commonly engage in griefing, the deliberate destruction or alteration of other players' creations, as well as cheating, or the use of modified software to gain an advantage. 2b2t is among few Minecraft servers of any kind established in 2010 that remain active.

The server is permanently set to hard difficulty and player versus player combat is enabled. It has seen over 1,000,000 players explore its procedurally generated map over approximately 16 years, increasing its file size to over 100 terabytes. 2b2t has been described in news media as the worst Minecraft server due to its toxic playerbase and culture. In 2025, the server's rules were updated on Mojang Studios' request, banning "harmful ideas, hateful symbols, or hateful speech". Since then, a wordfilter was introduced to chat messages as well as on in-game signs.