EDIT (17/11/20). I talked with 3 other candidates in the last week and none reported any variations in their game.
I suspect that what you heard about "jungle and invaders and you need to calculate something about getting to a destination within a few steps" is related to the Plant Defense game, which is set in a jungle.
That Scenario is completely covered in the McKinsey Imbellus Game Secrets Guide. In any case, if you purchased the guide you will be able to download any future version for free.
Here is the link to access the very last version:
https://www.preplounge.com/en/shop/tests-2/mckinsey-imbellus-game-secrets-48
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Hi V,
Thanks for sharing that. I haven’t heard anyone yet that went through a different version of the game - I talked last week with a few people who took it in Europe. It could well be though that they are A/B testing a new game in some offices.
Please feel free to PM me and I would be happy to update you as soon I hear something on that (I get weekly updates so that should be soon). I will also update this post as soon as I have news.
Also, if you bought the guide you can always download the very last version for free from the PrepLounge shop where I will upload the new information as soon as it is confirmed there is a new game.
Best,
Francesco
(editiert)