1Pitch · 30s
Elevator + the 4-layer check: where's the identity hook? how's content AI-native? what's the social verb? which paradigm?
2Concept · 1 day
3 mockups (open / play / end) + reference video + paradigm + style choice
3MVP · 3-5 days
Fork the reference game → wipe UUID → get the golden path running. No art, no SFX, no social yet.
4Feel · 5-7 days
Impact quartet + sound quartet + visual polish — the retention-defining phase.
5Social · 2-3 days
Identity hook ④: leaderboard + notify + cross-user wall · bake in day one, do not retrofit
6Ship · half day
UUID uniqueness + meta.json + poster + push + deploy verification
7Watch · ongoing
Live player feedback → if the same complaint shows up ≥ 2x, it's a design bug not a polish issue
⚠️ Don't
Skip phase 5 → retrofitting social costs 5× · useGameSave schema has to be re-cut · we've shipped this mistake too many times