2b2tmuseum.org is a playable semi-Vanilla Minecraft server running on Minecraft 1.21.4 designed to preserve the history of 2b2t. A survival anarchy experience is available on the same world that the world-downloads are hosted on.
You can /warp to any of the available saved builds on 2b2tmuseum.org, or you can run /freecam (/fc for short) and fly around with invincibility. At any time, you can run /fc again to restore your survival player file.