Merge a Nuke Progression Guide

Know what to focus on at each stage so your base keeps growing without wasted upgrades.

Quick answer

Codes → Spawn Speed → Spawn Tier → merge toward 16+ → lock base → raid only when stable. Rebirth unlocks higher Index tiers.

Progression Roadmap

Follow this path from your first bombs to rebirth. Each stage builds on the last, so don't skip ahead before your base is ready.

Swipe sideways to see all stages →

Stage 1

Starter Bombs

Goal
Clear early clutter
Focus
Merge low tiers fast to open space.
Common mistake
Holding onto weak bombs too long.
Stage 2

Better Nukes

Goal
Reach mid-tier nukes
Focus
Merge upward to unlock stronger units.
Common mistake
Skipping merges to rush a single nuke.
Stage 3

Income Upgrades

Goal
Build steady cash flow
Focus
Boost earnings before anything else.
Common mistake
Spending on cosmetics over income.
Stage 4

Raid Preparation

Goal
Get raid-ready
Focus
Stabilize income and stock resources.
Common mistake
Raiding with a fragile economy.
Stage 5

Base Defense

Goal
Protect your progress
Focus
Lock and organize before you leave.
Common mistake
Leaving the base open and exposed.
Stage 6

Rebirth

Goal
Reset for long-term gains
Focus
Rebirth once growth clearly slows down.
Common mistake
Rebirthing far too early for small bonuses.

Stage 3 (Income Upgrades) maps to the in-game Store — see the full Store upgrades guide for Spawn Tier, Spawn Speed, and Lock Base priorities.

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