In this level you need to collect 3 Chaos Emeralds before destroying the boss, the Roboiler. The overall layout of this level is as follows:
| Boss room | ||
| Upper left table | Upper steam room | Upper right table |
| Lower left table | Lower steam room | Lower right table |
You start at the bottom on a pair of bellows. Jump up and the bellows will blast you into the lower left table.
Lower left table[edit]
Break the door in the upper right part of the table. This will take 3 hits. You can do this by either:
- Directly hitting the door, OR
- Rolling into the cannon at the left side of the table, which will fire you towards the door.
Once the door is open, go through it to get to the lower steam room.
Lower right table[edit]
(The right table is a mirror copy of the left table, so these instructions are the exact same as for the left table, but with reversed directions - left becomes right and vice versa)
You never have to visit this table. But if you accidentally fall in, here are the the instructions anyway...
Break the door in the upper left part of the table. This will take 3 hits. You can do this by either:
- Directly hitting the door, OR
- Rolling into the cannon at the right side of the table, which will fire you towards the door.
Once the door is open, go through it to get to the lower steam room.
Lower steam room[edit]
Press any button to trigger a burst of steam from the floor, which propels you up a bit.
A large number of Clucks will start flying around. Bounce on top of the Clucks to enter the central pipe in the ceiling. This pipe will take you upwards to the first Chaos Emerald. Quickly move left or right so you don't fall back down, and follow the path into the upper steam room.
Upper steam room[edit]
The upper steam room works the same way as the lower one. This time there are two ceiling pipes, and either one will take you to the boss room. But before you can start the boss fight, you will have to visit the upper left table and upper right table first, in either order, to get the remaining Chaos Emeralds. The tables can be accessed at the far ends of this steam room.
Upper left table[edit]
There is a pipe blocked by a cork in a loop on the right side of this table. Hit that cork 3 times to break it and enter into a shaft directly below a Chaos Emerald. Quickly spam the flipper buttons to trigger bursts of steam that will carry you up to the emerald. After grabbing the emerald, use the pipe to your right to drop back down to the lower steam room. Go back to the upper steam room, and then onwards to another table or, if you have all 3 emeralds, up towards the boss.
Upper right table[edit]
(The right table is almost a mirror copy of the left table, so these instructions are the exact same as for the left table, but with reversed directions - left becomes right and vice versa)
There is a pipe blocked by a cork in a loop on the left side of this table. Hit that cork 3 times to break it and enter into a shaft directly below a Chaos Emerald. Quickly spam the flipper buttons to trigger bursts of steam that will carry you up to the emerald. After grabbing the emerald, use the pipe to your left to drop back down to the lower steam room. Go back to the upper steam room, and then onwards to another table or, if you have all 3 emeralds, up towards the boss.
Boss room[edit]
Remember, the boss room is accessible via two pipes in the ceiling of the upper steam room.
Once you have all three Chaos Emeralds and enter this room, the boss fight against the Roboiler starts. Shoot up into the large metal boiler vessel, either via a small hole at its bottom or by going up around the sides. Periodic steam bursts will temporarily block the side paths, but keep trying until you make it into the boiler. Now bounce around and hit the four robot heads. Each time you destroy a head, you'll fall out of the boiler and will have to make your way back in. The level is completed once all heads are dead.
If the ball drains in the boss room, it will fall all the way down to the very bottom of the level, where you'll hang on a chain above a vat of lava. Swing the chain back and forth by alternatingly pressing left and right, then jump off, and follow the path back towards one of the lower tables. Be careful: if you fall into this area too many times, the chain will break! At that point you'll fall directly into the lava, which will kill you.