This article may contain major plot spoilers that threaten to ruin elements of the story!
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If Rocko is talked to, he can change the flow of the magma in the Magma Flow Factory. This changes the level name to Volcanic Core, along with the actual level. However, when doing so, the player cannot fight the Giant Robosa despite the two levels having the same name.
After Key forges the new key from the key mold, the hero uses it to flip the switch that controls the Robosa. Once all of the rampaging Robosa shut down, Miney bumps into Salem (who was, of course, really Wilfre in disguise). Salem then states that Miney's idiocy has ruined their plan, and then goes off into the level to "clean up Miney's mess". Afterwards, the ground shakes and it's revealed that the Giant Robosa outside the control of the switch was on the loose in the factory. The Hero is then sent into the level to stop the Giant Robosa.
Once the Giant Robosa is defeated, Miney apologizes by saying he did what he thought was best for the village, and that the Banya Crystal was the key to Lavasteam's prosperity. Moe reassures him by stating that they have all gotten carried away, and Key confirms Moe's statement. The Hero and the rest of the gang are welcome back to Lavasteam at any time.
- There is a "fall through the floor" glitch here.
- The game does not autosave after the cutscene that takes place before this level.