Progression
Merge a Nuke Rebirth Guide
Every rebirth from 6 to 10 with published bonuses and requirements, plus a payback calculator. Updated July 2026.
Cash bonuses and nuke counts below come from patch notes for each rebirth release. Requirements are listed only where they were published — Rebirth 8's commander gate is documented, but 9 and 10 were not described the same way. Always read the in-game Rebirth panel before resetting.
Quick answer
Rebirth 6 to 10
| Rebirth | Cash bonus | Nukes | Requirement |
|---|---|---|---|
| R6 | — | — | Not publishedThe first rebirth beyond the original mid-game cap, added with the commanders launch. The patch notes did not publish its bonus. |
| R7 | — | +5 | Not publishedUnlocked five new Index nukes. The cash bonus was not stated in the notes. |
| R8 | +110% | +5 | Final nuke tier + Overclocker + Barrier commandersThe only rebirth with a documented commander gate. Unlocked Silent Whisper, False Step, Peek-a-Boo, Colossus and Fragmenter. |
| R9 | +120% | +5 | Not publishedThe July 25 notes did not list a commander gate the way Rebirth 8 did — check your Rebirth panel. |
| R10 | +130% | +5 | Not publishedCurrent ceiling. Shipped alongside Rebirth 9 in the same patch. |
Chasing Rebirth 8? You need both Overclocker and Barrier.
Should you rebirth now?
The real question is not whether the bonus is bigger — it always is — but whether you will play long enough to earn back the progress you reset. Put in the bonus figures from your own Rebirth panel and roughly how long this run took.
Your numbers
Read this off your in-game Rebirth panel.
Roughly how long this run took to get where it is now.
Payback
Time to get back to where you are
9.5 h
After that, everything is profit.
Income speed-up
1.05×
Hours you give up
27 min
Resetting makes every future hour earn 5% more. You rebuild to your current income in about 9.5 h instead of the 10.0 h it originally took — so if you plan to keep playing longer than that, rebirth now.
This assumes your rebuild scales with the cash multiplier, which is the dominant factor but not the only one — spawn tier upgrades and commanders also reset. Treat the result as a decision aid, not a promise.
Rebirth Loop
Wait for an income plateau
Rebirth becomes worth it when new merges and upgrades barely raise your cash/sec. Until then, keep merging — a reset too early throws away progress for little gain.
Spend your cash first
Rebirth resets your cash, so empty your wallet before you confirm. Buy affordable Spawn Tier and Max Spawn upgrades — any leftover cash is lost on reset.
Open the Rebirth menu
Find the Rebirth option on the left side of the screen. Once it is available, confirm to reset your nukes, cash, and upgrades in exchange for a permanent money multiplier.
Rebuild with the multiplier
After resetting you keep the permanent money multiplier and access to stronger nukes, so your next run reaches higher tiers faster than the progress you gave up.
Core Upgrades to Prioritize
Before a rebirth, balance your spending across the three core upgrades rather than pouring everything into one. They carry the early game and set up a faster climb after each reset.
Spawn Tier
Raises the tier of bombs and nukes you spawn, so each spawn starts closer to high-income nukes instead of the lowest tier.
Max Spawn
Increases how many nukes you can hold on the grid at once — more active nukes means more cash generated every second.
Lock Base
Strengthens your base lock so raiders cannot steal your stored cash while you are merging, AFK, or offline.
When NOT to Rebirth
- You still gain meaningful cash/sec from your next few merges — keep merging instead of resetting.
- You are sitting on a large cash pile you have not spent yet — buy upgrades first so nothing is wasted.
- You have not redeemed active codes — free cash and nukes speed up the run you are about to reset.
Frequently Asked Questions
What does rebirth do in Merge a Nuke?
Rebirth resets your current nukes, cash, and upgrades, but grants a permanent money multiplier and access to stronger nukes. Open the Rebirth menu on the left side of the screen once it becomes available.
When should I rebirth in Merge a Nuke?
Rebirth once your income plateaus — when new merges and upgrades barely raise your cash/sec. The permanent multiplier then makes your next run climb tiers faster than the progress you reset.
What should I do before rebirthing?
Spend your remaining cash before you rebirth, because the reset clears it. Buy affordable Spawn Tier and Max Spawn upgrades, and merge to your highest tier for one last high-income session.
Does rebirth reset my codes and game passes?
Robux game passes are permanent Roblox purchases and stay after rebirth. Cash you redeemed from codes is spent in-run, so use it before rebirthing — leftover cash is lost on reset.
Is rebirth worth it in Merge a Nuke?
Yes, once you hit a plateau. The permanent money multiplier compounds future earnings, so each rebirth lets you reach higher nuke tiers faster than the run you reset. Exact multiplier values are community estimates and can change with Friday patches.
What is the max rebirth in Merge a Nuke?
Rebirth 10 is the current ceiling. It was added on July 25, 2026 alongside Rebirth 9, and grants +130% cash and 5 additional nukes.
What does Rebirth 9 give in Merge a Nuke?
Rebirth 9 grants +120% cash and 5 additional nukes. It arrived with the July 25, 2026 patch.
What are the Rebirth 8 requirements in Merge a Nuke?
Rebirth 8 requires the final nuke tier plus the Overclocker and Barrier commanders. It is the only rebirth with a documented commander gate, so pick up both units before you plan the reset. It grants +110% cash and 5 additional nukes.
Do Rebirth 9 and 10 need specific commanders?
The July 25 patch notes did not list commander requirements for 9 or 10 the way Rebirth 8 did. That does not guarantee there are none — open the in-game Rebirth panel to see your actual gate before grinding.
Is the rebirth cash bonus permanent?
Yes. The cash bonus and the extra nukes carry across resets — that is the whole point of rebirthing. What you lose is your current cash, nukes and upgrades.
Do rebirth bonuses stack in Merge a Nuke?
Each rebirth level publishes its own bonus figure (+110%, +120%, +130% for 8, 9 and 10). The notes list them per level rather than as a running total, so read your in-game multiplier rather than adding them up yourself.