Juggling Survival Needs
Hunger, thirst, cold and fatigue all drain at once; you can only fix one at a time.
- Prototype complexity
- Who plays
- Solo decisions
- Design focus
- Planning · Risk
No.113The Long Dark01The core loop
Action → feedback → next choice- 01Read every need meter
- 02Pick the most urgent one
- 03Spend time and supplies on it
- 04Others slide meanwhile
↻Feedback changes the situation — the next round starts from there.
Walk through one round
A simplified design example. Situations and numbers illustrate the mechanic, not exact rules from a reference game.
- T1
Turn 1 · The situation
Food 30%, water 20%, warmth 50%, one hour until dark.
- T2
Turn 2 · The player chooses
Light a fire to melt snow and warm up; skip hunting for now.
- T3
Turn 3 · The feedback
Water back to 70%, warmth 80%, but food drops to 22%.
- T4
Turn 4 · The next decision
Food must come first tomorrow or health starts to fall.
How it plays
Each need decays at its own rate and any empty meter starts draining health. Every fix costs time, and time keeps draining the others. Color shifts, character cues and status icons tell the player which one breaks first.
What the player weighs
- Patch it now, or wait to fix it efficiently
- Recover in shelter, or leave to gather more
02Start small
Scope is an editorial estimate for the minimum prototype, not the reference game or a production schedule.
03One mechanic, different implementations

The Long Dark
Calories, thirst, fatigue and warmth jointly gate your condition; any deficit erodes health, and cold is the hardest to forecast.

Don't Starve
Hunger, health and sanity run in parallel; night and monsters erode sanity, and restoring it usually costs food or time.
The difference worth noticing
The Long Dark grounds pressure in realistic exposure, while Don't Starve makes one need a mental resource that summons enemies.
Case notes are Yoroll editorial summaries; rules may change between versions.
04What could you combine?
Tie renewable forage to needs: a berry patch eases hunger and thirst but regrows in three days, forcing a planned circuit.
Prototype this combo in Yoroll→Follow the next idea
Stop the Bleeding
A wound is bleeding out the clock; use whatever is at hand.
- Prototype complexity
- Who plays
- Solo decisions
- 01Take a bleeding wound
- 02Break from danger
- 03Bandage with cloth
- 04Change or treat later
Planning Around Sleep
You must sleep when tired, but the world keeps moving while you do.
- Prototype complexity
- Who plays
- Solo decisions
- 01Activity builds fatigue
- 02Find a safe place
- 03Choose how long to sleep
- 04Wake to a changed world
Injured Limbs, Lost Abilities
Hurt legs can't run, hurt hands can't aim: where you're hit decides what you can do.
- Prototype complexity
- Who plays
- Solo decisions
- 01A body part is hurt
- 02Linked abilities drop
- 03Adjust roles or tactics
- 04Heal or replace the limb



