Sign Builder

Each sign block holds up to 16 independent mini letters in a 2x2, 3x3 or 4x4 sub-grid, with separate front and back faces. Blocks placed in a square cluster of four or nine merge into one larger display with a shared collision box. A Grid Mode toggle, bound to Shift and V, switches between sub-grid placement and normal placement, and a real-time 3D hologram shows a ghost preview in green when the spot is buildable and red when it is obstructed.

Survival balance comes from a catalog of 40 textures, each applied with individual ingots or gems such as wood, stone, copper, iron, gold, diamond and emerald instead of whole blocks. Colors can be entered as RGB hex codes, saved as presets and cycled through a rainbow animation. Undo reverts the last build and refunds its items. The mod runs on client and server, so the server and every player need it, and it is published for Fabric, Forge and NeoForge for 1.20.1 and 1.21.1, under the GNU General Public License v3.0 only, and is open source.