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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →The Be a Lucky Block Alien Event is reported as a chance-based sequence: stay on the treadmill when the event is active, hope an alien spaceship absorbs you, receive an Alien Lucky Block, and let the nearest NPC open it for one of five Alien-rarity Brainrots. TechWiser documented that flow and the reward table on April 4, 2026, but no official developer source was found to confirm that the event, its four-hour timing, or its odds are still live in October 2026. Use the figures below as the published guide’s reference data, not as guaranteed current game rules.
What the Alien Event is
Alien is described as a limited-time event layered onto a base event in Be a Lucky Block. During the reported sequence, alien spacecraft appear overhead while players use the treadmill. A player has a chance of being pulled into a ship, transformed into an Alien Lucky Block, and returned to the treadmill. The nearest NPC then carries the player to its base and opens the block, producing one of five Brainrots exclusive to the Alien Event. The complete sequence is reported by TechWiser’s April 4, 2026 guide.
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That description matters because the player does not reportedly choose a Brainrot from a menu. The outcome is determined by the event’s drop roll, so completing the index requires repeated opportunities rather than a purchase or a fixed quest reward. The same pages describe the event as luck-based and do not identify a paid item, physical product, or special hardware requirement for triggering it.
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Availability and timing: what is confirmed and what is not
The available reporting is historical rather than a live status notice. TechWiser says a base event occurs every four hours, while the third-party Be a Lucky Block update log says Alien and Ink events cycled on a four-hour schedule in its April 2026 coverage. An April 14, 2026 Pro Game Guides event guide also mentions Alien in the event rotation.
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None of those pages is an official developer announcement, and they do not establish that the same rotation remained in place on October 13, 2026. Treat the four-hour figure as a report from that period, not as a timer you can rely on today. If you are checking the event now, verify that a current in-game event is actually running before committing time to the treadmill.
| Source and date | What it reports | Limit |
|---|---|---|
| TechWiser, April 4, 2026 | Alien is a limited event tied to a base event; spaceships, Alien Lucky Blocks, five Brainrots, odds, income, and collection rewards are described. | It is a secondary guide, not an official game notice; current availability is not confirmed. |
| bealuckyblock.org update log, April 2026 coverage | Alien and Ink are reported as cycling every four hours; the 185% collection reward is also reported. | The site is a third-party update-history page and does not prove the October 2026 schedule. |
| Pro Game Guides, April 14, 2026 | Alien is listed among events in the then-reported rotation. | The page does not document a current schedule or the complete Alien mechanic. |
How an Alien Event attempt works
Based on the reported mechanic, one attempt follows this order:
- A base event starts. Alien is said to occur when a base event triggers. The reports do not specify a player-controlled button that starts it.
- Alien ships appear. Look toward the sky for the reported alien spaceships. Their appearance is the visual indication that the Alien sequence is active.
- Remain on the treadmill. A player on the treadmill has a chance of being absorbed. Merely seeing a ship is not described as a guaranteed conversion.
- The player becomes an Alien Lucky Block. The reported transformation returns the block to the treadmill rather than directly placing a selected Brainrot in the player’s inventory.
- The nearest NPC opens it. The nearest NPC is said to take the player to its base and open the block. That opening produces one of the five Alien-rarity Brainrots according to the reported drop table.
The important practical distinction is between an event appearance and a successful roll. You can witness the ships without receiving a block, and receiving a block still does not let you select which Brainrot comes out.
Alien Brainrots, reported odds, and normal income
The following figures are copied from TechWiser’s April 4, 2026 table. “Income” is the normal earnings-per-second value shown by that guide, not a guarantee under every game condition. The five percentages add to 100%, but that arithmetic does not independently verify the game’s implementation.
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| Brainrot | Reported drop chance | Reported normal income | What the number means |
|---|---|---|---|
| Spaceshipini Tortini | 50% | 550K per second | The most common listed result, according to TechWiser. |
| Astro Bandito | 40% | 825K per second | A less common result with higher listed income. |
| Chachelien | 9% | 1.1M per second | A single-digit-percent roll in the published table. |
| Aliensini Octosini | 0.95% | 1.9M per second | A sub-one-percent result in the published table. |
| La Vacca Galactica | 0.05% | 2.8M per second | The rarest listed result and the highest listed normal income. |
The source for every value in this table is TechWiser’s Alien Event guide. The table shows two different ways to prioritize a target. If you want to complete the index, rarity is the main obstacle. If you are comparing the potential economic value of a successful roll, the listed income rises as the reported chance falls. A high income figure does not improve your chance of obtaining that Brainrot.
What the odds mean over repeated attempts
Expected attempts provide a useful planning scale, but they are not promises. If each successful Alien Lucky Block used the published probability and each roll were independent, the average number of rolls to see a particular result would be approximately one divided by its probability:
| Brainrot | Probability used for calculation | Average attempts in a simple model |
|---|---|---|
| Spaceshipini Tortini | 0.50 | 2 |
| Astro Bandito | 0.40 | 2.5 |
| Chachelien | 0.09 | About 11.1 |
| Aliensini Octosini | 0.0095 | About 105.3 |
| La Vacca Galactica | 0.0005 | 2,000 |
“Average” does not mean a guarantee at that attempt count. For example, with a 0.05% chance on every independent roll, the chance of at least one La Vacca Galactica after n successful rolls would be calculated as 1 − (0.9995)n. That works out to roughly 4.9% after 100 rolls, 39.4% after 1,000, and 63.2% after 2,000. Even 2,000 rolls would leave a substantial chance of missing it.
The same illustration shows why the sub-one-percent entry can dominate a completion attempt. At 100 independent rolls, the corresponding chance of at least one Aliensini Octosini using the reported 0.95% value is about 61.5%; at 200 rolls it is about 85%. These calculations are only probability examples. The sources do not establish whether the live game uses independent rolls, pity protection, server limits, duplicate protection, or a changed table.
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Choosing a collection target
If your goal is simply to start the index
Spaceshipini Tortini and Astro Bandito account for 90% of the published table together. They are the practical first targets because a successful roll is much more likely to produce one of them than a rare entry. Receiving duplicates may still be possible; the available guides do not explain duplicate handling, so do not assume every roll advances a collection slot.
If your goal is the highest listed income
La Vacca Galactica has the highest reported normal income at 2.8M per second, followed by Aliensini Octosini at 1.9M per second. Their reported chances are 0.05% and 0.95%, respectively. Pursuing income therefore means accepting a much lower acquisition probability; the source does not report a way to trade common Brainrots or income for better odds.
If your goal is a complete Alien index
You need all five named entries, including the two sub-one-percent results. Keep a written or in-game record of which names you have actually received, and treat every new roll as a chance rather than a guaranteed missing entry. Because the published pages do not document duplicate protection or a pity system, plan for the rarest roll to be the limiting step.
Alien index completion rewards
TechWiser reports that completing the Alien Event index awards an Alien Lucky Block described as a Secret-rarity block that is “185% stronger” than your best current Lucky Block. The same 185% advantage is repeated in the April 2026 update-history coverage at bealuckyblock.org.
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Neither source defines whether the wording is calculated as a multiplier, an additive percentage, or a particular in-game stat. Do not silently convert “185% stronger” into a specific numerical multiplier; use the game’s displayed value if you complete the index and compare the actual block in your collection.
The reported reward is tied to completing the index, not to obtaining one particular Brainrot. That makes the common entries useful as progress toward the same collection objective even though the rare entries determine how long completion may take.
The Stranger base skin requirement
The Alien guide also says the Stranger base skin requires both the Alien and Ink event indexes to be complete. Completing Alien alone is therefore not reported as sufficient for that skin. The available sources do not provide the Ink drop table, its current availability, or a different requirement, so confirm the in-game requirement before treating the Alien index as the final step.
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Before an event window
- Check whether the game is currently presenting an Alien event at all; the April 2026 schedule is not confirmed for October.
- Decide whether you are collecting every Brainrot or prioritizing the highest listed income. This prevents changing goals after common results appear.
- Keep a record of the five names: Spaceshipini Tortini, Astro Bandito, Chachelien, Aliensini Octosini, and La Vacca Galactica.
- Allow enough uninterrupted time to observe the treadmill and the NPC sequence. A ship appearance is only the start of a possible roll.
During the reported sequence
- Stay on the treadmill when the alien ships appear.
- Watch for the absorption animation or other visible confirmation that the player became an Alien Lucky Block.
- Let the nearest NPC perform the reported transport and opening sequence rather than leaving immediately after the ship appears.
- Record the Brainrot name and compare it with your index before beginning another attempt.
After a successful opening
- Check the Brainrot’s displayed income against the normal value reported in the table; in-game modifiers may change what you see.
- Update your collection record and note duplicates separately, because duplicate behavior is not explained by the cited guides.
- When all five entries are present, verify that the Alien index marks itself complete and that the Alien Lucky Block reward is visible before assuming the reward was granted.
Why an attempt may not match the guide
No ships appear
The four-hour cadence is an April 2026 report, not a confirmed current timer. A missing ship may mean Alien is not in the present rotation, the base event has not triggered, or the game has changed the event system. Check current in-game messaging and official developer announcements if available rather than repeatedly assuming the old schedule.
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You see ships but are not absorbed
The reported mechanic is chance-based. A ship appearance does not equal a guaranteed conversion, so remaining on the treadmill may still produce no block. The sources do not state the per-player chance, cooldown, eligibility rules, or number of simultaneous players who can be selected.
The NPC does not open a block
The documented sequence says the nearest NPC takes the player to its base and opens the block. If that sequence stops, capture the exact stage at which it failed, allow the event animation to finish, and rejoin only if the game is visibly stuck. There is no cited official troubleshooting procedure, so avoid assuming that spending Robux, changing hardware, or buying an item will repair it.
Your index does not update
Confirm the Brainrot name and whether the result was a duplicate. Since the pages do not describe the index interface or duplicate rules, an unchanged collection may reflect a duplicate, a delayed update, or a changed event implementation. Recheck the collection after the opening animation has fully completed.
How to read the published numbers responsibly
The reported probabilities are useful for comparing targets, but they are not a guarantee of current live odds. The guide is dated April 4, 2026; the update log and rotation mention are also from April 2026. No official primary source was surfaced for the event’s present status, the five percentages, the income values, or the 185% reward wording as of October 13, 2026.
Use the numbers as a reference hierarchy: common entries should appear more often than rare entries if the table is still active, and the rarest listed entry should require substantially more successful rolls on average. If your observed results differ, record them rather than treating a short play session as proof that the published table is wrong; small samples can vary sharply, especially for a 0.05% outcome.
Bottom line for players
The reported Alien Event is a treadmill-to-spaceship-to-NPC opening loop with five exclusive Brainrots. Spaceshipini Tortini and Astro Bandito are the common published results, while La Vacca Galactica is listed at just 0.05% and carries the highest listed normal income. Completing all five is reported to award a Secret Alien Lucky Block described as 185% stronger than your best current block, and the Stranger base skin is reported to require both Alien and Ink completion. Because all of those mechanics come from secondary April 2026 coverage, verify that the event is active and that the in-game display still matches before planning around any exact timer, percentage, or reward wording.
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