Mazes is a NeoForge 1.21.1 mod that adds a Maze Generator block: place it,
open the GUI, and it builds a flat, configurable maze on the block's own
level. The border is a subtractive cell mask cut out with pencil/rectangle
tools, so it can fill odd shapes and rooms instead of only a rectangle.
The mod is not on Modrinth or CurseForge, so the jar is hosted as a release
asset on yonlu/mazes and referenced with a packwiz url metafile. It targets
NeoForge 21.1.0+, so the pack's 21.1.251 is fine, and side is "both" because
it registers a block entity and network payloads.