Update 70 of Steal a Brainrot, dated October 10, 2026 on the wiki, added a new skeleton-themed base and the Skull Lucky Block. The wiki calls the Skull Lucky Block the second Halloween lucky block, after last year's Spooky Lucky Block. This guide lists all eight brainrots inside it with their listed chances and incomes, compares it to the Spooky Lucky Block, and covers the base that comes with free blocks. One honest note first: the wiki page for the block is still short and says how to obtain it is "upcoming", so we only report what is written there.
Update 70 at a glance
| Fact | What the wiki says |
|---|---|
| Update | Update 70 |
| Date | October 10, 2026 |
| Main additions | A new skeleton base and the Skull Lucky Block |
| New brainrots | 8 (all inside the Skull Lucky Block) |
| Block rarity | Skull |
| Listed cost | $500M |
| Next update | Update 71 is dated October 17, 2026 with features still unknown |
The update log also links the official Roblox event post for Update 70, which is where the developer announces each weekly update.
All Skull Lucky Block drops
The block holds eight brainrots. The wiki lists the chance of each one, how many blocks that is on average ("1 in"), and its income. We sorted the table from rarest to most common so the dream drops are on top. The rarity labels of these new brainrots are not shown on the block page, so we leave them out rather than guess.
| Brainrot | Chance | 1 in | Income |
|---|---|---|---|
| Dragon Skeletonini | 0.1% | 1 in 1,000 | $325M/s |
| Flying Dutchman | 0.5% | 1 in 200 | $92.5M/s |
| Boo Boo Rocket | 1% | 1 in 100 | $37.5M/s |
| Bat-in-the-Box | 5% | 1 in 20 | $22.5M/s |
| Bananito Skelito | 10% | 1 in 10 | $8.5M/s |
| Zombie Bowl | 21% | 1 in 4.76 | $4.5M/s |
| Grim Cheese | 30% | 1 in 3.33 | $1.6M/s |
| Candi Corni | 32.4% | 1 in 3.09 | $321K/s |
!Dragon Skeletonini
!Flying Dutchman
!Boo Boo Rocket
The top of the table is the reason people open these blocks. Dragon Skeletonini earns $325M/s but shows up only once in a thousand blocks. Flying Dutchman earns $92.5M/s at one in 200. Boo Boo Rocket earns $37.5M/s at one in 100. Together, those three make up only 1.6 percent of the drops.
!Bat-in-the-Box
!Bananito Skelito
!Zombie Bowl
The middle of the table is Bat-in-the-Box ($22.5M/s at 5%), Bananito Skelito ($8.5M/s at 10%) and Zombie Bowl ($4.5M/s at 21%). Most players will see these often.
The most common results are Candi Corni ($321K/s at 32.4%) and Grim Cheese ($1.6M/s at 30%). Together they are about 62 percent of all openings, so expect them often.
Average value of one block
Because the wiki gives every chance and income, we can do the math. Multiply each chance by its income and add everything up, and the average comes out to about $4.67M/s per block. This is our own arithmetic from the wiki numbers, so treat it as a guide for comparing blocks, not as a promise. The average is pulled up by the rare drops: Dragon Skeletonini alone adds roughly $325K/s to that average even though it is a one-in-a-thousand result.
Skull Lucky Block versus Spooky Lucky Block
The Spooky Lucky Block was the Halloween 2025 block (Update 22). The wiki says it has two Brainrot Gods and six Secrets, with an income range of $250K/s to $100M/s, and that last year it could be obtained through Admin Abuse events or by spending 500 Candy Corn. The wiki now lists it as unobtainable and says it may come back.
| Spooky Lucky Block (2025) | Skull Lucky Block (2026) | |
|---|---|---|
| Cost listed | $350M | $500M |
| Number of brainrots | 8 | 8 |
| Most common drop | Mummy Ambalabu, 32.75% | Candi Corni, 32.4% |
| Rarest drop | La Casa Boo, 0.3%, $100M/s | Dragon Skeletonini, 0.1%, $325M/s |
| Average income per block (our math) | about $0.87M/s | about $4.67M/s |
The wiki's own note about the Spooky block is that it was one of the weakest seasonal blocks because the game economy was smaller at that time. The Skull block fixes that: its worst drop, Candi Corni at $321K/s, is already better than the best Brainrot God of last year's block. The wiki's chances for the Spooky block are labelled "estimated", so the comparison is approximate.
You can still look at the old block's top prize on our La Casa Boo page.
The Reaper Base
Update 70's overview calls its new base the "Skeleton base". On the wiki's Base page, the matching entry is the Reaper Base, the entry that gives free Skull Lucky Blocks. We believe they are the same thing, but the wiki does not say it in one sentence, so please confirm in the game's shop.
- Price: 999 Robux.
- Bonus: buying it also gives 2 free Premium Skull Lucky Blocks.
- Status on the wiki: obtainable right now.
Base skins in Steal a Brainrot are cosmetic looks for your base. The wiki says that from Update 53 on, seasonal bases can be traded. Whether the Reaper Base is tradable is not written, so check before you buy. Last year's Halloween base, by contrast, was unlocked by collecting 25 of the 33 Halloween index brainrots, and the wiki now lists it as unobtainable.
How to get a Skull Lucky Block
The block's page has an obtainment section that says "Upcoming", and the overview text was still the empty template when we read it. The only confirmed way we found is the one above: the Reaper Base includes 2 Premium blocks. Do not trust any website that claims a spawn rate or a schedule unless it shows where it got that from. Official news appears in the Roblox event post linked from the update log.
Where Update 70 fits in the Halloween season
The 2026 Halloween content has arrived week by week, and the wiki's update log shows the order clearly.
| Date | Update | Halloween content |
|---|---|---|
| September 26 | Update 68 | Jump for Eggs LTM (not Halloween, but the last event before it) |
| October 3 | Update 69 | Haunted Fuse, Eclipse mutation and 11 new brainrots in the fuse |
| October 10 | Update 70 | Skeleton base (Reaper Base) and the Skull Lucky Block with 8 new brainrots |
| October 17 | Update 71 | Not announced yet |
In other words, the Haunted Fuse gives you a way to build brainrots from ones you already own, while the Skull Lucky Block is a pure luck box. They are different ways to chase Halloween brainrots, and you can read our Haunted Fuse guide for the first one.
Tips from the numbers
These ideas come from the table only, not from testing.
- 1Plan for the common results. About 62 percent of openings give Candi Corni or Grim Cheese, and 93 percent give one of the four cheapest drops.
- 2Do not count on the rare ones. A one-in-1,000 drop is the kind of result that most players will never see.
- 3If you are a kid saving Robux, remember that the Reaper Base costs 999 Robux, so ask a parent before spending.
- 4Check the wiki's Update 71 line on October 17. It was still marked as unknown when we read the log.
Frequently asked questions
Is the Skull Lucky Block permanent? The wiki does not say. Last year's Spooky Lucky Block was removed after the event.
What is Premium? The wiki uses "Premium" for the improved version of a lucky block that comes with some Robux bases. It does not describe the exact difference for this block, so we cannot say.
Do these chances include mutations? The table only lists the base chance of each brainrot.
Will there be more Halloween content after Update 70? Update 71 is dated October 17, 2026, but the wiki lists its main features as unknown, so nothing beyond that is confirmed. We will not guess what it holds.
Is this guide official? No. It is a fan-made summary of the wiki, and we have not opened any Skull Lucky Blocks ourselves, so every number comes from the wiki.
This guide summarizes the public Steal a Brainrot wiki. The Skull Lucky Block page is still being filled in there, so details may change.
