- Up to 10 custom shapes per player, stored on the server with the player (they survive relogs and deaths).
- Only the slots you've actually made a shape in appear in Ultimine's shape menu and when cycling shapes. Empty slots are invisible, so without any custom shapes Ultimine looks and behaves exactly as before.
- Your shape names show up in Ultimine's shape menu.
Using the editor
Open it with K (rebindable under Controls → FTB Ultimine) or the /shapeeditor command.
- Slots 1–10 are the numbered tabs at the top. Green numbers have a shape and show in Ultimine; grey ones are empty and hidden. Give the shape a name in the box below.
- The grid is the face you mine, as you see it: the top of the grid is the top of your screen, and the gold cell is the block you mine. Left-click or drag to add/remove cells, right-click to remove.
- Layers go deeper into the block (up to 15). Use
<>or scroll over the grid. Faint squares show the previous layer; Copy prev repeats it. - The grid is 15×15 (7 blocks out from the centre in each direction).
- Repeating: go to a layer and press Repeat from here. Everything from that layer to your last drawn layer then repeats forever, deeper and deeper into the block, until a whole repeat has nothing left to mine (like Ultimine's own tunnels, and still limited by
max_blocks). Layers before it are mined once, so you can build e.g. a wide entrance followed by an endless tunnel. Press the button again on that layer to stop repeating.- In loop (for layers before the repeat start): set it to yes to put that layer into every repeat too. The loop is then all "in loop" layers in their normal order, e.g. layers 1, 3 and 4 in the loop gives 1‑2‑3‑4 once, then 1‑3‑4, 1‑3‑4, … Layers set to no are mined only once at the start.
- Draw only layer 1 and repeat from it: a tunnel of that cross-section.
- Repeat a 3-layer section: a pattern that is 3 layers long, looped.
- Shift → / Shift ↑ (−7 to +7) move each repeat compared to the one before. On a one-layer loop that's layer-to-layer, so Shift ↑ +1 makes a staircase going up, Shift → +1 a diagonal tunnel. Orange dots in the grid show where the current layer lands in the next repeat, and repeating layers get a cyan frame and a ⟳.
- Max depth (optional, off by default): limits how many layers deep the shape goes, e.g. an endless tunnel that stops after 32 blocks. Use
-/+(Shift-click for 10 at a time); turning it on starts at the depth you've drawn, and going below 1 turns it off. Layers past the limit are marked red in the editor. - Reset deletes the shape in this slot, which hides it from Ultimine again.
- Save stores your shapes. Cancel / Esc asks once before throwing away unsaved changes.
- Copy code / Paste code puts a text code on your clipboard to share a shape with friends.
The same shape works on walls, floors and ceilings. On a floor the top of the grid points the way you face, on a ceiling it points behind you, which is how it looks on screen in both cases.

