SURVIVAL OPERATING SYSTEM / WORKING DESIGNS

HOLD ON
TO THE LIGHT.

Survival is physical: turn a crank, replace a bulb, gather moths, and decide which resource you can afford to lose.

01 / FILAMENT POWER NETWORK

Every light
must be earned.

An analog mechanism powers a fragile bulb implanted in the boy's right hand. In the beginning, every second of illumination is an act of effort.

Bulb, wire and hand-crank device design study
EXPERIMENTAL SYSTEM / INTERACTIVE CONCEPT DEMO
FILAMENT / MANUAL POWERREADY TO CRANK
24%
CHARGE
POWER LEVEL LOWBULB DIM

A small hands-on demonstration of a proposed mechanic — not actual gameplay.

02 / THE MOTH ECOLOGY

A tiny life.
A difficult choice.

Found around sources of light, moths are the boy's companions and his scarce resources. Collecting them feels gentle. Using them can feel complicated.

MOTH COLLECTIONSELECT A SPECIES
SPECIMEN / 001

LUNA MOTH

A pale-winged creature associated with transparent handgun rounds. One of the fragile creatures waiting near the city's lamps.

FUNCTION / HANDGUNRESOURCE / SHARED
CRAFTING NOTE: Moths can be converted into ammunition or moth-silk healing. The inventory and quantities remain subject to balancing.
03 / SURVIVAL MECHANICS

You can't carry
everything.

Resources exist as tactile objects. Notes are handled by hand, ammunition is filled with moths, and the journal is a real book carried in the boy's pack.

Diegetic journal and inventory interface concept art01 / PHYSICAL INVENTORY ↗
Moth silk crafting and healing game systems reference02 / HEALING & CRAFTING ↗
DIFFICULTY MODES

CHOOSE HOW YOU ENDURE

MOVIENOVICENORMALNIGHTMARE

Only Movie Mode regenerates health passively; all other modes require healing items.

04 / EXPERIMENTAL WEAPON DESIGNS

Glass. Steel.
Living ammunition.

Period-inspired firearms with transparent moth-filled cartridges. The burst-mode mechanisms shown here are proposals, not approved gameplay canon.

Concept design sheet for a moth-ammunition handgun
CONCEPT A / HANDGUN PROVISIONAL ↗
Concept design sheet for moth-ammunition pump shotgun
CONCEPT B / SHOTGUN PROVISIONAL ↗