Allumeria Commands and Cheats: Full List

Data checked:

Cheat menu toggles (5)

These live in Options → Cheats. They are per-world settings, not chat commands.

ToggleWhat it does
Allow NoclipPressing "X" while in-game enables noclip. Space causes the player to ascend and Left Shift causes the player to descend.
Infinite ItemsThe amount of items in a stack will no longer decrement.
Allow Creative MenuPressing "C" with your inventory open adds a new window above the existing inventory that allows the player to search for and spawn any item.
God ModeThe player will no longer take damage from any source.
Monster SpawningNo monsters will spawn.

Chat commands (14)

CommandWhat it does
/gendungeonGenerates a Forest Dungeon at the block the player is looking at.
/genstationGenerates a Mine Station at the block the player is looking at.
/gensnowGenerates a Snow Dungeon at the block the player is looking at.
/gentreeGenerates a Oak Tree at the block the player is looking at.
/genrailGenerates a portion of rail at the block the player is looking at.
/hurtHurts the player for the specified amount of damage.
/mobsToggles whether monster spawns are enabled or disabled.
/rtsChanges the random tick speed (Default: 4)
/tpsChanges the speed at which the game runs (Default: 60)
/setAfter setting two points with the Wand, this will turn everything between those two points into a solid block of whatever block ID is specified.
/genstructureGenerates a Rail Shaft at the block the player is looking at.
/effectGives the player a specified effect for a certain number of time in ticks. The default amount of time is 300 ticks, or 5 seconds.
/daySets the time to day.
/nightSets the time to night.

The two worth learning properly are /set and /effect. /set needs two points marked with the Wand first, then fills everything between them with the block ID you name — the item ID list is the other half of that command. /effect takes a time in ticks and defaults to 300 ticks, which is five seconds.

Debug keys (10)

KeyWhat it does
SpaceWhile held in the inventory, it will show the numerical ID of each item.
F1Hides the UI.
F2Takes a screenshot.
F3Shows debug information on screen.
F4Shows profiler information on screen.
F7Shows profiler information on screen for ambience.
F11Places the game into fullscreen.
KeyPad6While held, speeds up time by 180x
KeyPad7Causes the game to crash
KeyPad9While held, the game will not render any solid blocks.

Two corrections to that table, both from patch notes rather than the wiki. Space no longer shows item IDs — 0.15.1 removed that overlay, so use the table on our item ID page instead. And F11 fullscreen got two fixes in the same patch: the fullscreen state no longer resets when you leave the settings menu, and exiting fullscreen from settings re-centres the window. KeyPad7 still crashes the game on purpose; that one is not a bug report waiting to happen, it is a documented debug key.

Do commands disable achievements?

Nothing in Infinimelon's patch notes or the wiki says cheats block Steam achievements in Allumeria, and several achievements ("Watch Paint Dry", "Get into Shape") are trivially reachable from the creative menu. We have not tested every combination ourselves, so treat that as "no documented restriction" rather than a guarantee — if you are achievement hunting on a save you care about, use a separate world.

Sources

Cheat menu, chat commands and debug keys: official Allumeria wiki cheats page (allumeria.wiki.gg). The removed item-ID overlay and the fullscreen fixes: Infinimelon's 0.15.1 patch notes on Steam.