Most players know about the standard Fuse Machine. Fewer know that Steal a Brainrot has introduced 4 special fuse machines through events, each with unique recipes and brainrots you flat-out cannot get any other way. I've spent a lot of time running these fuses and tracking the numbers. This guide covers all of them — standard rarity fuses, Witch Fuse, Santa Fuse, and Divine Fuse — except Cyber Craft, which has its own separate guide.
Standard rarity-tier fuses
The base Fuse Machine is the bread-and-butter mechanic. It takes 3 same-rarity brainrots and rolls for the next tier up. Here's what the probabilities actually look like:
| Input | Output Probability |
|---|---|
| 3 Common | 30% Uncommon, 70% another Common |
| 3 Uncommon | 25% Rare, 75% another Uncommon |
| 3 Rare | 20% Epic, 80% another Rare |
| 3 Epic | 25% Legendary, 75% Epic |
| 3 Legendary | 18% Mythic, 82% Legendary |
| 3 Mythic | 12% God, 88% Mythic |
| 3 God | 5% Secret, 95% God |
The jump from Mythic to God is where most people feel the grind most. A 12% chance means you'll statistically need around 8 attempts — that's 24 Mythic brainrots minimum. It's a long road, but it's the intended path for your first 5–10 hours.
Witch Fuse (Update 20 — Halloween 2025)
The Witch Fuse Machine dropped during Halloween 2025 and produces Witch-themed brainrots that aren't in the regular conveyor pool at all.
Recipes
| Input Combination | Output |
|---|---|
| 4x Bombardiro Crocodilo | Witchy Bombardiro (Mythic) |
| 3x Trippi Troppi + 1x Lirili Larila | Trippi Witch (Legendary) |
| 5x Cappuccino Assassino | Witch Cappuccino (God) |
| 1x Frightrot + 3x random Mythic | Cursed Witch (Secret-tier event) |
Why Witch Fuse matters
Witch-themed outputs carry +25% income compared to their non-witch counterparts. And the Cursed Witch is the only Secret you can get outside the standard conveyor — which makes it genuinely rare and tradeable for serious value.
When to grind Witch Fuse
Only during the Halloween event. The machine locks the rest of the year. If late October is coming up, start stockpiling Bombardiro Crocodilo and Cappuccino Assassino now — don't wait until the event opens.
Santa Fuse (Update 28 — Christmas 2025)
Santa Fuse came with Christmas 2025 and is themed around Santa-and-elf brainrots. This one leans hard into high-tier inputs.
Recipes
| Input | Output |
|---|---|
| 4x random Legendary | Santa's Helper (Mythic) |
| 5x random Mythic | North Pole God (God) |
| 1x Tralalero Tralala + 3x Common | Tralala Christmas (Legendary) |
| 3x Mythic + 1x God | Big Red Santa (Secret event) |
Strategy
Santa Fuse heavily rewards having high-tier brainrots ready. The Big Red Santa Secret is one of the most valuable Secrets in current 2026 trading values — if you have the inputs, don't hold off. Grind hard in late December for the best yield. The Tralala Christmas recipe is the only accessible entry point for lower-tier players since it uses 3 Commons.
Divine Fuse (Update 41 — March 2026)
Divine Fuse launched in March 2026 and as of right now it's the most relevant special fuse in the game. It produces Divine-tier brainrots themed around mythological creatures.
Recipes
| Input | Output |
|---|---|
| 5x random Mythic | Divine Phoenix (God) |
| 3x God + 2x Mythic | Divine Hydra (Secret) |
| 1x Indra (Mythic event) + 3x random God | Indra Divine (Secret) |
| 7x Legendary | Lesser Divine (Mythic) |
Why Divine Fuse is hot right now
Divine Hydra and Indra Divine are commanding the highest trade values in the current meta. If you've been sitting on spare God brainrots and wondering what to do with them, Divine Fuse is your answer. In my own testing, the 3 God + 2 Mythic recipe has the best EV of any fuse in the game right now.
Limitation
Divine Fuse has a 30-minute cooldown between uses. This is the most punishing cooldown of any fuse machine. Plan out your Mythic and God collection before you open the machine — don't waste a cooldown window on a recipe you underprepared for.
Fuse strategy: which to prioritize
Early game (first 10 hours)
Stick to standard rarity-tier fuses only. Special fuses need high-tier inputs you won't have yet, and burning cash on them early is just dead money.
Mid game (10–30 hours)
Use the standard fuse to climb toward Mythic, then start saving 4–5 Mythics for the currently active special fuse (right now that's Divine).
Endgame (30+ hours)
Special fuses become your primary mechanic. Standard fuses lose efficiency once you have a stable Mythic income base — the activation cost and cooldowns become the bottleneck.
Fuse cost economics
| Fuse | Activation Cost | Cooldown |
|---|---|---|
| Standard | $5K | None |
| Witch | $50K | 5 min |
| Santa | $50K | 5 min |
| Divine | $100K | 30 min |
| Cyber Craft | $200K | 60 min |
The activation costs are minor compared to the value of outputs at high tiers. The cooldowns are what actually matter for planning — especially that 30-minute Divine window.
Optimization tips
Tip 1: Stack fuse fodder before opening the machine
Don't fuse one at a time. Stockpile 6–8 same-rarity brainrots first, then open the Fuse Machine and run a full session. The momentum keeps you from making emotional decisions mid-run.
Tip 2: Use cheap brainrots as filler
Some recipes accept "any" brainrot of a tier — always use the cheapest qualifying ones. Save your expensive rares for direct income instead.
Tip 3: Save event fuses for when you have stable income
Don't blow your first Mythic on a Witch Fuse if you have no backup income. Special fuses are a luxury for when you're already stable.
Tip 4: Time fuses during luck events
Some events — Aurora Pulse being the main one — boost fuse output probabilities by 25–50%. If you know a big fuse session is coming, wait for an active luck event. I've gotten multiple Gods from sessions I would have otherwise walked away from empty-handed.
Future fuse machines (rumored)
Datamines point to two more fuse machines planned for 2026:
- Lunar Fuse — Update 45+ (October 2026 rumored)
- Eldritch Fuse — Update 50+ (year-end)
If these pan out, saving high-tier brainrots in storage now puts you ahead of the curve at launch.
What's next
Once you've got the fuse system figured out, the next layer is mutations — turning your fused brainrots into multiplied earners. Pair this guide with the Mutations Tier List and the Cyber Mutation Guide for the full optimization picture.
