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Keyboard shortcuts

The full list is also in the app under Settings, Keybinds, where every keyboard shortcut below is rebindable: click an action to capture a new key, with a warning if two actions clash, then Save keybinds. Only the mouse and a couple of held modifiers (Alt to erase, Ctrl + right-click to sample height) are fixed. Your keybinds and slider defaults are saved to their own file, separate from the rest of your settings, so you can hand that one file to another user. Button tooltips in the app always show your own current keys, so they stay correct after you rebind anything.

In the in-game view, W, A, S, D and Q, E drive the fly camera, so the app’s default shortcuts deliberately avoid those keys. The in-game view has its own separate camera keybinds, edited in the same Settings section.

The groups below match the groups in the app’s Keybinds editor. The defaults are:

The Keybinds editor in Crucible Heightmap Settings: every action listed with its assigned key and a Clear button, ready to rebind

KeyAction
1In-game view
22D view
33D view
KeyAction
RReset view
TTop-down view, snap the 3D camera straight overhead for a flat map-wide look (R returns to the normal angle)
SpaceHold to orbit the camera (works while a brush panel is open, so you can reposition mid-paint without laying a stroke)
KeyAction
GGrid: from the 3D or in-game view, jumps to the 2D view showing the color map with the in-game grid; in the 2D view, swaps between the color map and the grayscale heightmap
FSlope overlay
YWater layer, hide the ocean surface to inspect the seabed
MRamp markers and outlines, in the 2D, 3D and in-game views
(unbound by default)Minimap, hide or show the corner map
(unbound by default)Sun down or up
KeyAction
CConjure a new map
NAdd island
HReroll salt, roll new inner terrain (and a new world) without moving the coastline
DeleteDelete the selected island(s) or ramp
Ctrl + ASelect all islands
Ctrl + GFlip vertical
Ctrl + HFlip horizontal

With an island selected, a flip mirrors that island in place, keeping its shape, its paint and any baked channel cuts. With nothing selected it takes the whole map: your painted splats, the biomes and topology, and the islands all mirror together, and the position and rotation sliders keep matching the map you can see. Either way it is instant, and it does not reroll your world.

These apply to whichever brush panel is open: the terrain brush, the splat brush, or the biome and topology brushes.

KeyAction
[ or ]Shrink or grow the brush
O or PRotate the brush footprint (5 degrees per press). It turns whichever brush is open, the terrain brush’s stamp included
Tab or Shift + TabNext or previous target: the ground texture, the biome, or the topology layer, depending on which brush is open
Alt (held while painting, fixed)Erase
(unbound by default)Hardness down or up
(unbound by default)Spacing down or up
(unbound by default)Clear layer
(unbound by default)Cycle falloff: smooth, linear, sharp, soft
(unbound by default)Cycle stamp shape
(unbound by default)Cycle symmetry: off, X, Y, quad
KeyAction
BBrush mode
(unbound by default)Strength down or up
Ctrl + right-click (flatten brush, fixed)Sample height
Ctrl + scroll wheel (fixed)Brush size, in the 3D view and the in-game view
Alt held (fixed)Run the brush backwards: raise lowers, bluff softens, pucker digs, ripple inverts
KeyAction
VSplat mode (opens or closes the splat panel)
XSwap to blend, toggles the brush between your current type and the Blend smudge
Alt + right-click (fixed)Eyedropper, pick the ground texture under the cursor
KeyAction
JBiome brush
KTopology brush
LChannels, cut water clean across the map
Alt + right-click (fixed)Eyedropper, pick the biome or a visible topology layer under the cursor

Only one of these docks is open at a time, so picking one closes whichever was up.

Neither brush generates a world for you. On a generated map they edit the derived layers; on a bare map the first stroke starts a blank canvas you paint yourself.

Undo and Redo auto-repeat while the key is held. Both pause while a panel is open or a text field is focused, so typing in a box never fires them (your system’s own text undo still works).

KeyAction
Ctrl + ZUndo
Ctrl + Shift + ZRedo
KeyAction
Ctrl + NNew project (prompts to save unsaved changes first, then clears to a fresh random island)
Ctrl + SSave project (re-saves the open project, or opens the Projects panel to name it the first time)
Ctrl + Shift + SSave project as (opens the Projects panel ready to name a new project)
(unbound by default)Export now, run the export without opening the panel
(unbound by default)Save as seed
KeyAction
4Custom island panel, draw or import an island shape
5Open Settings
6Open Export
7Open Projects
8Open Saved Seeds
9Worldgen panel
IIsland randomizer drawer
EscapeClose the open panel, otherwise deselect everything

The island pad and the channel pad take the keyboard while they are open, so none of the shortcuts above fire behind them. A bare letter cannot conjure a new map or flip a view out from under your drawing, and undo belongs to the pad rather than the map.

Both pads have their own groups in Settings, Keybinds (Island drawing pad and Channel drawing pad), so you can rebind their keys there. A pad key only clashes with another key in the same pad: 1 can pick a brush in the pad and still switch the view everywhere else. Every pad button’s tooltip shows the key it is bound to.

Island pad:

KeyAction
1 to 6Pick a brush: round, coast, blobs, spit, coves, fill
7Move, drags the whole drawing around the pad
EErase, every brush takes land away instead of adding it
[ or ]Brush size (Ctrl + scroll over the pad does the same)
SNext symmetry: off, mirrors, then radial
GGrid
TabFlip the square between your drawing and the terrain it makes
Space (held)Pan the pad
Ctrl + Z, Ctrl + Shift + Z or Ctrl + YUndo and redo your drawing
EnterMake the map from this shape
EscapeClose the panel, your drawing stays in the pad

Picture editor (the Image tab):

KeyAction
Click, right-clickAdd the part under the pointer to the cut, or take it away
Shift + clickTake the part under the pointer away
Ctrl + ZUndo the last click or stroke
TabFlip the square between the picture and the terrain it makes
EnterMake the map from this picture

Channel pad:

KeyAction
1Draw: left-drag cuts a channel, right-drag puts the land back
2Pick: click a cut to move, resize or delete it
Ctrl + click (fixed)Pick another cut, or drop one, in the list or on the map
Shift + click (fixed)Pick every cut in the list from the first pick to this one
[ or ]Narrower or wider, for the next cut or the picked ones
KKeep the picked rolled cut as one of your own
Delete or BackspaceDelete the picked cuts
Arrow keysNudge the picked cuts, ten times further with Shift
Shift (held while drawing)Draw a straight line
0Zoom back out to the whole map
Space (held)Pan the pad
Ctrl + Z, Ctrl + Shift + Z or Ctrl + YUndo and redo
EnterApply
EscapeDrop the pick, otherwise close the pad, asking first if you changed anything
InputAction
Click or dragSet value
Ctrl + dragFine, one step per pixel
TabFocus the slider (enables arrow keys)
Arrow keysStep by one
Ctrl or Shift + arrowStep by ten
Home or EndMinimum or maximum
Double-click sliderReset to default
Double-click valueType a value
InputAction
Double-click (2D or 3D)Select island
Ctrl or Shift + click an islandAdd or remove it from the selection (select several at once)
Ctrl + ASelect all islands
Click waterDeselect all
Drag a selected islandMove it (moves the whole selection together; painted textures follow)
Drag (3D)Orbit the camera
Scroll (3D)Zoom
Drag (2D minimap)Pan
Scroll (2D minimap)Zoom