Lumen Drift III

The little light drifts on — but the void itself has changed. It has hardened into living marble: flowing bands, bright veins and slow whirls churn behind every step you take, shifting from jade to violet to amber as you cross the three galleries — the Marble Gardens, the Inverted Sanctum, and the Tempest Gallery — before facing the thing beating at the center of it all: the Marble Heart.

The full moveset from Lumen Drift II returns (double jump, air dash, glide, wall-jump, stomp), and the toolkit has grown again:

Grapple beacons — press the dash key mid-air near a glowing beacon to zip toward it; arriving slings you upward and refunds your air jump and dash
Gravity flip — pink diamonds invert gravity, letting you run along the ceiling of the Inverted Sanctum; the high road hides most of its shards
Dash orbs — blue orbs refresh your dash and double jump mid-flight
Phase platforms — slabs that blink in and out on a shared rhythm (one dot and two dots mark the alternating groups)
Conveyor belts & wind columns — belts drag you along the floor, updrafts carry you to shards no jump can reach
New enemies — sentinel turrets that snipe from a distance, plus a four-hit boss with radial volleys and marble rain

Controls:

Action	Keyboard	Touch
Move	`←` `→` or `A` `D`	`◀` `▶` buttons
Jump / Double jump	`↑` / `Space` / `W`	`⤒` button
Glide	hold jump while falling	hold `⤒`
Wall-jump	jump while sliding on a wall	same
Air dash	`Shift` / `X`	`⟫` button
Grapple	dash key mid-air near a beacon	`⟫` mid-air near a beacon

Goal:

Light shards — collect all 28 for a flawless clear; the Inverted Sanctum’s ceiling route holds a third of them
Checkpoints — nine beacons, including two anchored to the ceiling; each one remembers which way gravity pointed when you touched it
The Marble Heart — weather its bullet volleys and marble rain, then stomp the golden core when the shell spins open; four hits wake the portal home