The Fuse Machine sits in your base in Steal a PC, and it only does one thing. It takes three copies of the same box and fuses them. That sounds simple, but getting three matching boxes home means stealing them one at a time from zones that reset every night, and then holding on to them instead of hatching them right away.
Quick answer: Steal three of the same box (for example, three Snow Boxes), keep them unhatched, then bring them to the Fuse Machine in your base. Higher-tier boxes give more Luck.
Fuse Machine rules in Steal a PC
The Fuse Machine stands on the base grounds next to the treadmill track, so you pass it every time you train. Its counter reads 0/3 when nothing is loaded, which is the clearest sign of what it wants from you: three items, all of one type.
Open its panel and the game spells out the rules in a few short lines. Here is what each one means in practice:
- “Bring 3 same Boxes to Fuse” means three copies of one box name, not three boxes of the same rarity.
- “Better boxes give more Luck!” means fusing higher-tier boxes improves your Luck.
- “3 Boxes Left” tells you how many matching boxes the machine still needs.
- “Boxes you have 3+ of are first” means the box list sorts any type you own three or more of to the top.
That last sorting rule saves time. You don’t need to scroll through your whole inventory to see whether a fuse is possible. If nothing appears at the top of the list, you don’t have a set yet.
The machine wants boxes. Once you hatch a box, it turns into a PC and stops counting toward a box set, so hold back any box you plan to fuse.
Boxes worth fusing and where they spawn
Each zone has its own boxes, and the farther a zone is from your base, the better its boxes tend to be. The route out of base runs through Grass, Desert and Swamp before reaching Snow, then Volcano beyond that. These are the boxes you can pick up on that path:
| Box | Zone |
|---|---|
| Mushroom Box | Mushroom |
| Snow Box | Snow |
| Snowflake Box | Snow |
| Cocoa Box | Snow |
| Caldera Box | Volcano |
| Basalt Box | Volcano |
| Volcano Box | Volcano |
| Divine Volcano Box | Volcano |
Snow is the practical place to build a first set. Snow Boxes show up there repeatedly across nightly resets, so collecting three of them is realistic. Volcano boxes are worth more, but the zone is farther out and guarded by sleeping beasts you have to slip past.
Box tiers matter because of the Luck rule, and the gap between tiers is huge. A Snowflake PC is Epic and earns $95.1K/s. The RTX Magma Bull, hatched from a Divine Volcano Box, is Divine, weighs 7.59K lbs and earns $19.8M/s on its own.
One Divine PC moves your offline income dramatically. With the RTX Magma Bull in the pen, the base banner jumps to “Your base earns $10M/s offline!”, compared with “Your base earns $109K/s offline!” before it.
Divine and Secret boxes appear on their own schedule. Divine boxes spawn at the end of the night, and the game announces special spawns in chat with lines such as “A Secret Snow Box spawned in Snow!” or “A Divine Cave Box spawned in Cave!” Watch for those messages if you want to fuse something above the regular tiers.
Treadmill Speed needed to reach far zones
Speed decides whether you make it home with a box. Snow and Volcano are long runs from base, and the treadmill is where you build the Speed for them. Hop on, keep running, and grab the shoe pickups along the track for extra Speed.
Press Space (Jump) to get off the treadmill when you are ready to head out. Upgrading the treadmill raises how much Speed you gain per second, and it also changes the track’s color from red to purple with glowing spikes at Level 6.
| Treadmill level | Speed gain | Upgrade cost |
|---|---|---|
| Lv.5 | +66.2K Speed/s | — |
| Lv.6 | +312K Speed/s | $27.5M |
| Lv.7 | +787K Speed/s | $52.5M |
The jump from Level 5 to Level 6 is the best value here. It costs only $27.5M and nearly quintuples your Speed gain, and the Level 7 upgrade more than doubles it again. The game confirms each purchase with “Treadmill upgraded to Lv.6!” and the sign above the track updates.
Trails are a second source of Speed. The Trails stall sits near the Gem Shop in the base, and each trail multiplies your Speed gain. Blaze gives x2.5, and Galaxy gives x3 for $2.5B. Pricier trails go much higher.
How to steal three matching boxes
Every box in a set has to be stolen and carried home separately. Repeat this run until you hold three of the same box.
When night falls the game shows “ALL BOXES RESET!” and every zone restocks. That’s the moment to head out again, since a fresh copy of the box you need may be waiting.
Loading boxes into the Fuse Machine
Once you hold three of one box, the fuse itself takes only a few steps.
If the top of the list is empty, you don’t have a matching set yet. Go back out and steal more copies of a box you already own two of, rather than starting a new type.
Pen space and selling PCs
Whatever comes out of your boxes ends up in the pen, and the pen has a hard slot limit. Boxes you hatch have to go inside the wooden pen area, and the game reminds you with “Keep it inside your pen!” When the pen is full, at 14/14 or 15/15, nothing else can hatch until you upgrade or clear space.
Pen upgrades get expensive quickly. Stand at the pen and press E at the “Upgrade Pen” prompt to buy the next level.
| Pen upgrade | Slots added | Cost |
|---|---|---|
| Level 9 to Level 10 | +1 (14 to 15) | $4B |
| Level 10 to Level 11 | +3 | $48B |
A successful upgrade shows “Pen upgraded! 15 slots unlocked – your pen got bigger!” and the pen’s fence physically grows outward. The jump to Level 11 costs twelve times as much as the previous one, so it usually takes a stretch of saving.
The cheaper way to free space is selling. Duplicates and low earners, like a Birch Tower PC or extra Spore Mini PCs, are worth more as instant cash than as pen occupants.
With room in the pen, a treadmill strong enough for the long runs, and three matching boxes held back from hatching, the Fuse Machine is ready to use. Every set you complete should come from the highest-tier box you can reliably carry home, because that’s where the extra Luck comes from.
