Controls

The camera

Key	Does
W A S D	Fly
Space / Shift	Up / down
Ctrl (hold)	Fly faster
Alt (hold)	Fly slower
Right mouse (hold)	Look around
Right mouse (tap)	Back to Select

Speed starts at 0.35 and runs between 0.02 and 4.00. Boost and slow are multipliers on top of whatever you have set, so a comfortable base speed plus Ctrl covers most distances without changing the setting.

Selecting and placing

Key	Does
Left mouse	Place, or select
Left mouse drag	Box select
C (hold)	Add to the selection
V (hold)	Remove from the selection

Box select reaches 50 metres and takes at most 400 objects at once. The same 400 is the cap on a bulk selection generally — large enough for a town square, small enough that one drag cannot lock up your client.

Moving what you have selected

Key	Does
G	Move gizmo
R	Rotate gizmo
U	Drop to ground
B	Duplicate
X	Delete
J	Undo
Arrow keys	Nudge along X and Y
Q / Z	Nudge up / down

Undo goes back 60 steps.

Nudge is the precise one

The arrows and Q/Z move the selection exactly one step — 0.05 by default, changeable from the snap controls down to 0.001. That is how you close a one-centimetre gap that the gizmo keeps overshooting.

While placing

The keys change meaning when you have a prop on the cursor and have not placed it yet:

Key	Does
Arrow keys	Turn and tilt the preview
Q / Z	Push it further away / pull it nearer
R	Give it a random turn

Placement distance starts at 6 m and runs from 0.5 m to 100 m. The preview turns slowly on the spot so you can see all sides of it before committing, and faces the camera by default.

The interface

Key	Does
H	Show / hide the editor interface
Backspace	Close the editor
Esc	Close the editor

H is worth knowing — it leaves you flying with everything placed and selected, just without panels in the way. It is how you look at what you have actually built.

Rebinding

Every player rebinds their own keys in Help → Controls. Their choice is theirs; it does not change anyone else's.

The server-wide defaults are in Config.KeyBindings:

Config.KeyBindings = {
    Forward      = 'W',
    Backward     = 'S',
    Left         = 'A',
    Right        = 'D',
    Up           = 'SPACEBAR',
    Down         = 'SHIFT',
    Boost        = 'CTRL',
    Slow         = 'LALT',
    Place        = 'MOUSE1',
    Select       = 'MOUSE1',
    MultiSelect  = 'C',
    Deselect     = 'V',
    ToggleGizmo  = 'G',
    GizmoMode    = 'R',
    SnapToGround = 'U',
    Clone        = 'B',
    DeleteObject = 'X',
    Undo         = 'J',
    ToggleHud    = 'H',
    Exit         = 'BACKSPACE',
    NudgeXPlus   = 'RIGHT',
    NudgeXMinus  = 'LEFT',
    NudgeYPlus   = 'UP',
    NudgeYMinus  = 'DOWN',
    NudgeZPlus   = 'Q',
    NudgeZMinus  = 'Z',
}

A binding that did not take is findable

/rm_diag keys

prints what every binding actually resolved to. A name the game does not recognise shows up here rather than silently doing nothing, which is the difference between "my key is broken" and a typo in config.lua.

If the camera gets stuck

/rm_unstick

Resets the camera and the interface focus. From the server console, for someone else:

rm_mapeditor_unstick <id>

Both are safe to run at any time — they put you back in your body without touching anything you have placed.