What Store upgrades should I buy first in Merge a Nuke?
Spawn Speed first, then Spawn Tier, then Max Spawn. Upgrade Lock Base duration before long merge sessions or offline play.
Merge a Nuke Store Upgrades
Which Store upgrades matter most, when to buy them, and how to grow without spending Robux.
Quick answer
Buy Spawn Speed first, then Spawn Tier and Max Spawn. Upgrade Lock Base before long merge sessions. Robux boosts are optional.
Store menu
Merge a Nuke Upgrades
Most growth comes from the in-game Store — not random buys. This priority list mirrors what successful early sessions do: faster spawns, higher spawn tiers, then defense.
Early-game upgrade order
- 1Redeem all active codes first (Shop (left) → Enter Code... box at the bottom → Redeem) for starting cash and nukes.
- 2Buy Spawn Speed first — community gameplay shows a big early boost for a few thousand cash.
- 3Save for Spawn Tier so new nukes spawn at level 2 instead of level 1.
- 4Raise Max Spawn so more nukes appear at once, then keep merging duplicates.
- 5Upgrade Lock Base duration before you idle or merge for long stretches.
UpgradePriorityWhat it doesWhen to buy
- Upgrade
Spawn Speed / Spawn Rate
Prioritize this over cosmetic buys. Faster spawns = faster merges = faster income.
PriorityEssentialWhat it doesMakes new nukes appear faster so you can merge more often without waiting.
When to buyRight after codes — one of the first Store purchases in most early sessions.
- Upgrade
Spawn Tier
Huge long-term value. Higher spawn tiers skip the weakest bomb steps entirely.
PriorityEssentialWhat it doesRaises the level that newly spawned nukes start at (e.g. level 1 → level 2 → level 4).
When to buyOnce you have a few thousand cash and basic spawn speed — before chasing raids.
- Upgrade
Max Spawn
Pair with Spawn Tier — more high-tier spawns on the board accelerates everything.
PriorityHighWhat it doesIncreases how many nukes can sit on your base at the same time.
When to buyWhen your board feels empty or you are waiting on spawns instead of merging.
- Upgrade
Lock Base (duration)
Default shield time is short. Upgrading gives you more time to merge safely.
PriorityHighWhat it doesExtends how long your base shield stays active after you lock it.
When to buyBefore any long merge session or when other players are raiding nearby.
- Upgrade
Quicker Lock Cooldown
Optional but helpful in busy lobbies with frequent PvP.
PriorityMediumWhat it doesShortens the wait before you can activate Lock Base again.
When to buyMid-game when you are raiding often and need shields back faster.
- Upgrade
Quicker Launch Cooldown
More useful for active raiders than pure idle merge players.
PriorityMediumWhat it doesReduces downtime between launching nukes at players or the center city.
When to buyAfter your economy is stable and you raid or hit the city regularly.
- Upgrade
Nuke Health (x2)
Defense upgrade — pair with Lock Base for safer late-game boards.
PriorityMediumWhat it doesMakes your nukes harder to destroy when another player attacks your base.
When to buyWhen you start holding high-tier nukes you cannot afford to lose.
- Upgrade
Cash Multipliers (Robux)
Optional speed-up. Free players can progress with Spawn Tier + merges alone.
PriorityLate-gameWhat it doesTemporary or permanent cash boosts from the Store (x2, x4, x8, etc.).
When to buyOnly if you choose to spend Robux — not required for free progression.
- Upgrade
Auto Merge (Robux)
Quality-of-life only. Manual merging works fine through mid-game.
PriorityLate-gameWhat it doesAutomatically combines matching nukes on your board when the grid gets crowded.
When to buyVery late game when manual merging across dozens of high-tier nukes is tedious.
Pro tips
- Spawn Speed + Spawn Tier beat random one-off purchases every time.
- Do not buy bulk nukes with Robux unless you have board space — they can clutter your base.
- Lock before merging in a busy lobby; getting reset wipes your board progress.
- Rebirth unlocks higher nuke tiers — save big cash spends until you know your merge goal.
Pair upgrades with the Beginner Guide merge rules and the Tier List to know what you are merging toward.
Common Store upgrade questions
Short answers for this guide. For the full wiki FAQ, visit all questions.
What does Spawn Tier do?
It raises the level new nukes spawn at (for example level 1 → level 2 → level 4), skipping weaker early bombs over time.
Should free players buy Robux upgrades?
Robux boosts are optional. Spawn Speed, Spawn Tier, Max Spawn, and Lock Base carry most free-to-play progression.
When should I upgrade Lock Base?
Before any long merge session, before going offline, and when other players are raiding nearby — default shield time is short.
Recommended next stepTier ListNuke tier rankings and merge priorities for long-term growth.Continue
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