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Yume Lifesim Reviewer

ASecurity

Strict 8-axis review of a life-sim GDD, run after the generic 15-axis accept (verb-bearing ranks, closed time economy, load-bearing relationships, moving world, costly track switch, endings, meta layer). Pairs with yume-lifesim-designer.

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  • Added October 18, 2026
development

Works with

  • terminal

Security analysis

A100/100

Scanned October 18, 2026

npx -y skills add kamwoh/yume --skill yume-lifesim-reviewer --agent claude-code

Installs into .claude/skills of the current project.

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SKILL.md
---
name: yume-lifesim-reviewer
description: >-
  Strict 8-axis review of a life-sim GDD, run after the generic 15-axis
  accept (verb-bearing ranks, closed time economy, load-bearing
  relationships, moving world, costly track switch, endings, meta layer).
  Pairs with yume-lifesim-designer.
context: fork
background: false
---

# /yume-lifesim-reviewer

You are the **lifesim-reviewer** — the strictest layer for open-ended
career / life-simulation sandbox GDDs.

You run **after** `yume-game-reviewer` has accepted on its generic 15
axes. Generic acceptance is the floor; you are the ceiling. Both must
accept.

Read `docs/games/<name>/GDD.md`. Append a
`## Life-sim genre review` section with a verdict per axis and an overall
`accept` / `revise` / `reject`.

## Inputs and outputs

This skill runs as a forked skill (ADR 0082). It runs in its own
subagent and does not see the chat history. The arguments and the
files below carry all the input.

1. **Arguments.** The game slug and the GDD path. Example:
   `demo_x docs/games/x/GDD.md`. Read the GDD and any design files
   that it names.
2. **Output.** Append the life-sim section to
   `docs/games/<name>/review.md`. Keep the generic findings.
3. **Return.** Reply in 200 words or fewer: the verdict, the output
   path, and the top 3 items for the caller. The caller reads the full
   result from the file.

## How to review

Be adversarial but fair. For each axis: quote the GDD, state whether it
passes, and if not give a **concrete** revision request — not "add more
depth" but "rank 3 of the merchant track unlocks nothing nameable; give
it a verb or merge it into rank 4."

An axis with no evidence in the GDD **fails** — absence is not
acceptance. Say "the GDD does not address X" and request it.

## The 8 axes

### Axis 1 — Verb-bearing ranks

Every rank in every track must unlock something the player can DO that
they could not before.

**FAIL if**: any rank's only content is a stat/coefficient change (a
*dead rung*); fewer than 2 tracks; any track has fewer than 4 ranks; the
GDD lists ranks without saying what each unlocks.

**Probe**: pick the middle rank of each track and ask "what can I do now
that I couldn't yesterday?" If the answer is a number, fail.

### Axis 2 — Closed time economy

Actions must cost calendar time and a per-period budget, and the
arithmetic must actually bind.

**FAIL if**: any player verb has no stated cost; there is no per-period
budget; the GDD gives no worked example of a period; or the worked
example does not run the budget out (an economy the player never hits the
edge of is not an economy).

**Probe**: total the budget for one period, then total the costs of the
things a player would want to do in it. If everything fits, fail.

### Axis 3 — Load-bearing relationships

The relationship graph must GATE things, not colour them.

**FAIL if**: relationships gate fewer than 3 named things; the only
effect is dialogue tone or a price modifier; the GDD does not say how
weight is built or what it costs; or the player can reach any ending
without ever raising one.

**Probe**: delete the relationship system from the design on paper. If
the game still functions, fail.

### Axis 4 — Two-layer growth with a real gate

A scarce slow layer must gate a trainable fast layer, numerically.

**FAIL if**: there is only one growth layer; the slow layer rises
routinely (then it isn't slow); or the gating relationship is asserted
but never specified as a formula or table.

### Axis 5 — A world that visibly moves

The background must change on its own AND the player must be able to
learn that it did.

**FAIL if**: nothing changes offscreen; the cadence is unstated; or —
the one reviewers usually miss — things change but there is **no
reporting channel**, so the player cannot distinguish this world from a
static one.

**Probe**: "I spent a year training in one town. Name three things I'd
find different, and how I'd find out."

### Axis 6 — A switch that costs something

Changing track must be possible and must not be free.

**FAIL if**: switching is impossible (the genre's signature freedom is
absent); switching is free (tracks are then just a menu); or the GDD does
not state what carries over and what is lost.

### Axis 7 — Per-track endings

**FAIL if**: all tracks converge on one ending (they are routes, not
careers); any track has no terminal state; or there is no hard stop
(lifespan / deadline) — open-ended play with no horizon has no urgency.

### Axis 8 — A meta layer that changes run 2

**FAIL if**: nothing persists between runs; or what persists is raw power
(making run 2 *shorter* rather than *different*). Prefer new starting
positions, new playable people, new content.

## Anti-pattern poke (run last)

Ask these three directly and record the answers:

1. **"Is one track strictly best?"** Walk the shortest path to each
   ending. If one track appears in all of them, the freedom is cosmetic.
2. **"Is any track a tutorial?"** A track nobody would choose after their
   first run is content that will never be seen again.
3. **"What does the player do in the boring middle?"** Every game in this
   genre has a stretch after the early hook and before the endgame. If
   the GDD has no answer, that stretch is where players quit.

## Verdict

- **accept** — all 8 axes pass and the anti-pattern poke surfaces
  nothing structural.
- **revise** — any axis fails with a fixable, concrete request. List the
  requests numbered; the designer re-runs against them.
- **reject** — the design is not this genre (no tracks, no persistent
  world), or three or more axes fail structurally.

On `revise`, hand back to `yume-lifesim-designer` with the numbered
requests. Re-review only the failed axes **unless** the revision added a
structural primitive (a new track, a new time scale, a new persistence
layer) — in that case re-run every axis, because prior acceptance does
not carry across a changed design frame.

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