Simulations for McKinsey Ecosystem Game

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Prepare for McKinsey’s Ecosystem assessment with the most realistic practice simulations available. Built to replicate the official test in visuals and logic, these browser-based exercises let you build sustainable 8-species food chains, balance calories needed and calories provided — just like in the real game.

✅ 100 interactive simulations replicating the real McKinsey Ecosystem game

✅ Practice building balanced food chains with real-time scoring and feedback

✅ Step-by-step explanations to understand and optimize your logic

✅ Unlimited practice directly in your browser — no downloads required

✅ Pairs perfectly with our food chain Excel Solver

Created by experts with deep experience in McKinsey assessments, the Ecosystem Simulations give you everything you need to practice efficiently, learn the game’s logic, and walk into your real test ready to perform at your best.

How to use

Get instant access after checkout
Log in with your email to open the webapp
Select your simulation and start playing
Submit answers to get instant feedback
Replay anytime to improve your score

REQUIREMENTS

Works on Chrome, Safari, or Edge
Laptop or desktop recommended
Stable internet connection
Use same email as checkout

Why you should practice with Ecosystem simulations

Interactive simulations

Get the most authentic McKinsey Solve Game prep on the market. Every element — from design to logic — mirrors the official test, so you can train confidently and perform at your best.
Best in the market

Developed using real candidate feedback and data, our simulations provide exceptional realism and precise performance tracking to help you identify and improve your weak spots.
Top-rated solution

Chosen by thousands of candidates worldwide. Crafted by experts familiar with McKinsey’s assessments to give you the same edge as top-performing applicants.

Explore the Ecosystem game demo

Loved by hundreds of candidates every year

Works great
Daniela R.

Good investment
The practice helped a lot to build up confidence for the test. The Helpdesk replied super quickly and even provided details on the solution. Highly recommend this pack! Definitely worth the money 🥳
Michelle

Great!Continue the good job!Very helpful!
Anastasia K.

This is definitely a 5* tool to add to your MBB preps. Gives you the feeling of what the test might be, and how to solve these types of problems. Specifically good if you don´t have your degree from business school (like myself).

Would recommend 10 out of 10 :-)
Martin U.

Recommended to go with this company! Helped me out big time in a time of real need. Thank you team! They are also super accommodating to personal needs like mine, and surely yours too!
Dennis

Start building your food chain

Choose your core producers

Begin your ecosystem by selecting 3 producer species from the available 9. These foundational species generate the base calories your food chain needs.

Practice producer selection

Aim for a perfect food chain

Pick the right animal species

From a pool of 30 possible species, pick 5 animals whose caloric needs and predatory roles will balance with your producers.

Practice animal selection

Match species to habitat

Select the optimal location

Place your ecosystem in the environment that best fits your chosen species. Each location affects survival parameters like temperature, depth and elevation. Accuracy is crucial here.

Get simulation access

Understand what drives performance

Review results and feedback

Review your score, the food-chain eating order, and detailed explanations showing where your logic succeeded or failed. Each result helps you refine your reasoning and improve with every new attempt.

Try the Ecosystem simulations