Rebirth Tier List — Merge a Black Hole Priority Guide (2026)
Rebirth priority tier list for Merge a Black Hole on Roblox. Rank rebirth milestones, multiplier value, and reset timing after XAF Games Sunday patches and Extra Rebirths events.
Rebirth is the highest-leverage reset in Merge a Black Hole, the merge-raid-idle Roblox game from XAF Games with 3M+ visits and weekly Sunday updates. Unlike black hole tier lists that rank merge units, this rebirth priority tier list ranks when and which rebirth milestones deliver the best permanent multiplier return — especially during limited windows like the July 2026 Extra Rebirths update paired with Admin Abuse + Rebirths.
Use this page with the Rebirth Calculator, the how to rebirth guide, and the overall tier list before you press reset.
Early meta disclaimer
Rebirth math changes often. XAF Games adjusts multiplier curves, unlock costs, and event bonuses on Sundays — and headline events like Extra Rebirths (July 2026) can temporarily shift every row in this table. Treat S-tier rebirth timing as valid for the current patch week only; re-read weekly updates after each Sunday publish.
How we rank rebirth priorities
Multiplier gain per hour lost — Net permanent income increase divided by merge progress sacrificed.
Event stacking — Bonus rebirth rates during admin abuse or Extra Rebirths weekends.
Merge board state — Whether your grid is mid-chain or ready to liquidate without blocking S-tier holes.
Star Shop alignment — Post-rebirth Star spending from FREESTARS and working codes should match income or raid goals on the cash or raiding lists.
Patch volatility — Recent rebirth reworks marked with (~) until two stable Sundays pass.
Rebirth priority tier table
| Tier | Rebirth milestone / timing | Why it ranks here |
|---|---|---|
| S | First rebirth after Accretion Drake (A-tier income) + event bonus active | Best ROI for new accounts; stack Extra Rebirths multipliers |
| S | Rebirth during confirmed Admin Abuse + Rebirths bonus window | Limited-time multiplier text in UI — verify before reset |
| A | Second rebirth with Gravity Well MK-II income online | Strong permanent scaling; use Rebirth Calculator |
| A | Rebirth after first S-tier cash farmer (Quasar / Void Collapse) | Solid mid-game pivot; pair with offline Cash guide |
| B | Rebirth with only B-tier holes on board | Acceptable if event bonus compensates; otherwise wait one merge tier |
| B | Rebirth purely for raid loadout swap | PvP-focused; see raiding tier list |
| C | Rebirth before redeeming MERGE / FREESTARS | Wastes free codes economy — redeem first |
| C | Rebirth mid-merge with duplicate top tiers unmerged | Loses grid value; finish merges per merge guide |
| D | Rebirth without locking base pre-reset | Raid risk during transition; read lock base guide |
| F | Rebirth on rumor without UI multiplier text | Chat hearsay during events — always confirm in rebirth menu |
S-tier rebirth windows explained
First rebirth after A-tier income — Most accounts hit break-even within 45–90 minutes when MERGE code Cash accelerates the Drake chain. During Extra Rebirths, XAF Games has signaled additional rebirth layers and bonus multipliers — the July 2026 update page tracks exact bonus wording.
Event rebirth (Admin Abuse + Rebirths) — When developers run live admin sessions, rebirth buttons often show boosted percentages. These windows are S-tier only while the UI displays the bonus. Miss the window and the same reset drops to B-tier value.
A-tier: standard progression rebirths
Second rebirth post–Gravity Well MK-II — Income players should enter this reset with offline Cash capped and base locked. Multipliers compound with Star Shop picks from the Star Shop guide.
Post–S-tier farmer rebirth — After Quasar Harvester or Void Collapse, rebirth unlocks deeper multiplier tiers introduced in recent Sunday patches. Cross-check cash income tiers so you are not rebirthing into a nerfed hole line.
B-tier and below: when to wait
B-tier board rebirth — Only rush if an event bonus expires within hours. Otherwise merge one more tier — patience beats a weak multiplier.
Raid-only rebirth — Raiders resetting for PvP slots without income backup fall behind farmers unless raid guide goals justify it.
C-tier mistakes — Redeem MERGE (1,000 Cash) and FREESTARS (2 Stars) before any reset. Rebirthing with tutorial holes still on the board is almost always wrong.
D/F — Never rebirth while base is unlocked during peak raid hours; never rebirth because Discord spam said so without reading patch notes on updates.
Extra Rebirths (July 2026) impact
Roblox event listings describe the upcoming Extra Rebirths patch as adding more rebirths, admin abuse, and QoL plus bug fixes. For tier purposes:
- New rebirth layers may create fresh S-tier milestones — retest break-even in the calculator after publish.
- Admin abuse weekends temporarily promote event rebirth rows to S-tier.
- QoL fixes to rebirth HUD may change controls — skim PC and mobile pages after patch day.
Follow the dedicated Extra Rebirths July 2026 article for patch-day checklist and code drops.
Recommended rebirth route by playstyle
Idle farmer route: Codes → A-tier income → first rebirth (event if available) → Gravity Well → second rebirth → specialize on cash tiers.
Raider route: Codes → hybrid Void Collapse → rebirth after raid loadout online → chase raiding tiers → rebirth only when steal speed plateaus.
Hybrid route: Follow getting started guide through first rebirth, then split 70/30 using overall tier list hub.
Tools and verification
Run the Rebirth Calculator with:
- Live Cash per second from your merge board
- Current rebirth level from the in-game menu
- Event multiplier toggle during admin weekends
- Optional code boost if a temporary income code is active
If break-even exceeds 60 minutes without event bonus, downgrade that reset to B-tier and keep merging.
Related pages
- Tier list hub — black hole rankings
- Cash income tiers — farmer priorities
- Raiding tiers — PvP priorities
- How to rebirth — step-by-step reset guide
- Rebirth Calculator — interactive break-even tool
- Extra Rebirths update — July 2026 patch details
- Working codes — MERGE and FREESTARS
Rebirth tier priority is about timing, not speed. Merge a Black Hole rewards players who reset during S-tier windows — event bonuses, proven income plateaus, and verified multiplier text — not players who rebirth because the button glows.
Frequently Asked Questions
Quick answers to the most common questions.
When is the best first rebirth in Merge a Black Hole?
Usually after reaching Accretion Drake-level income (A-tier) and redeeming MERGE / FREESTARS from working codes. During Extra Rebirths or Admin Abuse events, first rebirth can rank S-tier if bonus multipliers show in the UI.
Does this rebirth tier list rank black holes?
No — it ranks rebirth timing and milestones. For hole rankings see the tier list hub, cash income, and raiding pages.
How do Extra Rebirths change rebirth priority?
The July 2026 Extra Rebirths update adds rebirth layers and event bonuses. New milestones may become S-tier until balance settles — read Extra Rebirths July 2026 after Sunday patch.
Should I rebirth during Admin Abuse + Rebirths?
Often yes when the rebirth menu shows event bonus multipliers — confirm in UI, not chat, then use the Rebirth Calculator before confirming.
Why is rebirth mid-merge F-tier?
Unmerged duplicate top tiers lose value on reset. Finish merges using the how to merge guide unless an expiring S-tier event bonus forces an exception.