Malcolm pet detail

The Malcolm pet is an item that can be found while training Invention. It can be inspected to unlock the Malcolm pet, and it's destroyed permanently after inspecting it

It is unlocked by training Invention via disassembly, siphoning (including mechanised siphons), or making gizmos. Gaining this pet is based on the amount of experience awarded at once; the more experience granted, the greater the chance of gaining this pet. The chance is not affected by experience boosters. When a player obtains the pet, they receive one of the following messages:

While skilling, you find Malcolm, the Invention pet. It has been added to your inventory.

While skilling, you find Malcolm, the Invention pet. However, you do not have enough inventory space, so it has been sent to your bank.

When inspecting it, the following message is shown: "Congratulations! You have unlocked the pet: Malcolm"

In a purely mathematical format your chance $ f $ of receiving the pet on any particular action is

$ f = \frac{B \times S}{9,000,000,000} $


  • $ B $ is the base experience per action
  • $ S $ is the virtual skill level. At 200 million experience, a flat bonus of 200 is applied to this value
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