If you've played Steal a Brainrot for a while, you've probably spotted this loud, colorful truck zooming around someone's base. That's Horegini Boom — one of the most eye-catching Secret Brainrots in the whole game. She's rare, she's pricey, and she definitely makes a scene (literally — she's built out of speakers). This guide breaks down everything you need to know in simple, player-friendly language.
Horegini Boom is a Secret-tier Brainrot that costs $650M and generates $2.75M per second.
She's a female Brainrot and does not have a ritual.
She belongs to the group of high-value Secret units that are notoriously hard to get and even harder to see in normal lobbies.

Horegini Boom looks like a big, friendly festival truck built from colorful blocks. The whole design screams “party truck”:
Honestly, she's one of the most joyful designs among the Secret units.
Yes — she's very rare.
| Attribute | Info |
|---|---|
| Rarity | Secret |
| Cost | $650M |
| Gender | Female |
| Ritual | No |
| Income | $2.75M/s |
Since she's tied to a limited event and special spawn rules, she's considered one of the rarer Secret-tier Brainrots.
Horegini Boom is Admin Abuse Exclusive, tied to the Indonesian Event. That already tells you she's not something you casually find anywhere.
You have three ways to get her:
She has a 1% spawn chance on the special boat.
This makes the Aura Boat method extremely time-sensitive.
Classic Steal a Brainrot gameplay:
Stealing is often the easiest method — especially in lower-level servers where defenses are weaker.
If you don't want to gamble the 1% spawn or fight through locked bases, you can buy Horegini Boom brainrot from U4GM directly for $3.79.
This skips the grind and the event timing completely.
Based on her:
Her trading value tends to be upper-mid to high tier among Secrets.
In most trading circles, she ranks similar to popular Secrets like:
She usually trades for strong Secret units or multiple weaker Secrets.
Because she's event-locked, her value increases after the Indonesian event ends.
Usually yes, but only if the price is fair.
She's valuable but not the strongest Secret. What makes her special is:
If someone tries to overcharge way above typical Secret value, it's better to refuse the trade or just steal another copy.
Horegini Boom is solid but not the absolute strongest Secret. Her income is decent but some Secrets beat her.
Compared to other Secret-tier Brainrots:
Overall:
If you like cute or funny designs, she's one of the best-looking Secrets in the game.
Horegini Boom is a Secret Brainrot with a fun, speaker-covered truck design and a strong $2.75M/s income rate. She's rare due to the Indonesian Admin Abuse Event and a low 1% spawn chance, making her desirable in trades and highly sought after by collectors.
You can get her by:
She sits in the middle-high range of Secret power, and while not the highest-income unit, her rarity and event-limited nature make her very valuable.