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---
name: scope-to-vertical-slice
description: "Scope the project to a vertical slice that proves the core loop is fun before scaling content, to de-risk the build. Reach for this at greenlight."
---
# Skill: Scope to a vertical slice
Scaling content before the loop is fun builds expensive games nobody plays.
## Step 1 — Define the slice
The minimum build that proves the core loop end-to-end (§3 #1).
## Step 2 — Sequence the risk
Put the riskiest unknowns (fun, tech) first (§3 #3).
## Step 3 — Set the fun bar
Define what 'the loop is fun' means to pass the gate.
## Step 4 — Gate the full build
Only greenlight content scaling after the slice passes.
## Output
A vertical-slice scope, a risk sequence, a fun bar, and a build gate.
