BuildBattle

Arenas are placed in separate dimensions, so an older arena never overlaps a newer one. Before a new arena is built, the previous area is cleared with a 15-block margin to avoid leftover blocks.

Players choose between square and circular arenas with a random theme. The terrain uses Perlin noise with several octaves for natural hills, ridges and mountains. The same theme and seed always produce the same landscape, including terrain height, vegetation and trees, so tournaments can compare builds on identical ground. Trees come from vanilla ConfiguredFeature oak and spruce generation, so they look like normal overworld trees. Theme names are case-sensitive, and large radii of 150 to 200 can cause a short lag spike on a server, so testing usually starts with a radius of 20 to 40.

The mod is server-side only, so players join without installing it. It is released under the MIT License and is not open source. Files are published for NeoForge across 15 release versions, 1.21.1 – 26.2, with 1.0.0 as the latest beta file for 26.2. Settings are controlled through commands, since there is no configuration file yet; a config screen using ModConfigSpec is planned for later versions.