McKinsey Imbellus Test : What makes a pass/fail?

Actively preparing for upcoming interviews with Mckinsey McKinsey
New answer on Nov 04, 2020
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Anonymous A asked on Nov 03, 2020

What constitutes passing or failing the McKinsey Imbellus Test? To add colour, for the Plant Defense part of the game where there's three 10-12minute iterations of the invader specie test, should your plant get invaded in one of the three, would that constitute a fail? Is this assessment combined with other rounds of assessment for a fuller picture?

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Content Creator
replied on Nov 03, 2020
#1 Coach for Sessions (4.000+) | 1.500+ 5-Star Reviews | Proven Success (➡ | Ex BCG | 10Y+ Coaching

Hi there,

Possible reasons for failure in the McKinsey Imbellus test include:

  1. You did not manage to create a sustainable ecosystem in Ecosystem Management
  2. You did not manage to defend the plant long enough in Plant Defense
  3. You did not identify the reason for the disease in Disease Management
  4. You run out of time before completing all parts of the game

The fact that your plant dies before round 15 in one of the game sections in Plant Defense doesn’t necessarily mean you will fail the game.

The Imbellus test is normally conducted as screening on its own, however that also depends on the office; in some, it is conducted together with interviews, thus both elements are taken into account.

If you want to prepare in the best possible way, I created a guide exactly for that.

This guide will:

  • Show you the perfect strategy for each of the 4 Game Scenarios
  • Explain every single part of the Game with ad-hoc pictures
  • Detail the exact steps to improve in the 5 Skills tested in the game
  • Provide you insider information from previous applicants who succeeded in the game
  • Reveal the must-know answers to the most common questions on the Imbellus
  • Offer you a ready-to-use Excel template to maximize results in Scenario 1 with a detailed tutorial
  • Give you a proven template to build the food chain in Scenario 1

This guide will cover every single part of the Game, so you can be 100% confident the day of the assessment, without worrying “I should have prepared better for this”. You won’t need any additional material to prepare after it.

You can download the guide instantly here:

As an extra bonus, I am offering for a limited time the Consulting Industry Cheat Sheet (worth $29) for free with the guide. You will get access to the key insights of the 17 most common industries in case interviews.

If you need additional support or have any questions on the guide please feel free to PM me, I am happy to provide extra tips for free.



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Content Creator
replied on Nov 04, 2020
McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut


TBH, and despite the materials that are online to help you prep for it, the grading criteria is like the Coca-cola recipie and none will know or tell you.



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Francesco gave the best answer


Content Creator
#1 Coach for Sessions (4.000+) | 1.500+ 5-Star Reviews | Proven Success (➡ | Ex BCG | 10Y+ Coaching
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