McKinsey Solve Has a Third Game — and It's Unlike Anything Before

If your McKinsey Solve invitation email says 85 minutes instead of the standard 65, you're getting a third game: Sustainable Future Lab (SFL). This new module is rolling out in select regions as of early 2026, and it represents a fundamental shift in what McKinsey is testing.

Unlike Sea Wolf (microbe optimization) and Red Rock Study (data analysis), Sustainable Future Lab is a behavioral, decision-focused game. Think situational judgment test wrapped inside the Solve assessment. No spreadsheets, no calorie calculations — just realistic consulting team scenarios where every choice you make shapes what happens next.

Here's everything we know so far, pulled from candidate reports and early analysis.

What Is Sustainable Future Lab?

Sustainable Future Lab places you inside a research team scenario — typically involving environmental science topics like algae research or coral spawning. But the science is just the backdrop. The real assessment is about how you make decisions within a team.

Instead of crunching numbers or building food chains, you're navigating people problems: a teammate who's checked out, a group that can't agree on next steps, a moment where three reasonable options sit in front of you and none is obviously right. You choose, and the game reshapes around that choice.

This isn't the return of the deprecated Ecosystem Building game — that was a food-chain optimization puzzle. SFL is built around an entirely different skill set: the behavioral competencies McKinsey has traditionally assessed through the PEI (Personal Experience Interview), now embedded into the digital assessment for the first time.

Format and Structure

Based on candidate reports from early 2026, here's how the game breaks down:

The game follows a specific progression:

1. Mission briefing — You receive a research context (e.g., an algae research project or coral spawning study) that establishes the scenario

2. Priority ranking — You arrange 4 actions in order of priority, testing your ability to structure and sequence decisions

3. Sequential team scenarios — Approximately 11 questions where team members discuss issues and you select how to respond (redirect the discussion, suggest an alternative, defer to an expert, push for consensus, etc.)

4. Short survey — A brief wrap-up survey at the end

Why McKinsey Is Adding a Behavioral Game Now

This isn't random. McKinsey has been refining the Solve assessment since 2019, and the pattern is clear: each iteration moves closer to simulating actual consulting work. Red Rock replaced the multiple-choice PST with a case-style analysis. Sea Wolf replaced ecosystem puzzles with a more realistic optimization challenge. SFL takes the next logical step — evaluating interpersonal judgment, the skill that arguably matters most once you're staffed on a project.

The timing also makes sense from a screening perspective. With 70-80% of candidates failing the Solve, McKinsey can afford to add assessment dimensions without significantly changing pass rates. SFL likely helps them differentiate between candidates who score similarly on the analytical games by adding a behavioral signal to the mix.

The Four Skills SFL Evaluates

Red Rock and Sea Wolf test whether you can crunch data and optimize systems. SFL tests something McKinsey has never assessed digitally before: whether you'd be effective in a room with other consultants.

Structured Decision-Making

You're presented with ambiguous situations where there's no obviously "correct" answer. The game evaluates whether you apply a consistent decision-making framework or react inconsistently to similar situations. If you choose to push for consensus in one scenario but shut down discussion in a similar scenario two questions later, that inconsistency signals weak judgment.

Team Leadership and Collaboration

Some scenarios involve team members who are disengaged, overly dominant, or pulling in different directions. You need to decide: Do you address the behavior directly? Create space for quieter voices? Redirect the conversation to keep things moving? The game doesn't reward the "nicest" answer — it rewards the most effective one.

Consistency of Reasoning

Because the game is adaptive — your answers influence what comes next — contradictory choices across questions become visible. McKinsey can detect whether you're applying a coherent approach to team dynamics or just picking what sounds good in isolation.

Handling Ambiguity

Real consulting work is full of moments where the data is incomplete, stakeholders disagree, and there's no textbook answer. SFL mirrors this reality. You won't find a formula to optimize. You'll find a judgment call to make.

How Scoring Likely Works

McKinsey hasn't published official scoring criteria for SFL, but based on the game's structure and its resemblance to established situational judgment tests (SJTs), scoring likely evaluates:

• Alignment with McKinsey's consulting competencies — inclusive leadership, structured problem-solving, balancing assertiveness with collaboration

• Internal consistency — do your choices across the 13 questions reflect a coherent leadership style, or are they scattered?

• Adaptive responses — how effectively you respond when the scenario shifts based on your earlier decisions

• Priority-setting accuracy — whether your initial ranking reflects sound consulting logic about sequencing and impact

Unlike Red Rock and Sea Wolf, where scoring is largely quantitative (did you get the right answer? how efficiently?), SFL scoring is likely more about pattern recognition across your full set of choices.

Where Is SFL Being Rolled Out?

As of early 2026, Sustainable Future Lab is not a global standard — yet. Candidate reports indicate it's appearing in:

• Germany — multiple confirmed reports

• Middle East — several candidates have encountered it

• Other select regions — sporadic reports, suggesting a phased rollout

The pattern is consistent with how McKinsey has historically evolved the Solve. New modules get tested in specific markets before broader deployment. If you're applying in 2026, especially to European or Middle Eastern offices, check your invitation email carefully. An 85-minute total test time (instead of 65 minutes) is the clearest signal that you'll face SFL.

How to Prepare for Sustainable Future Lab

Preparation for SFL is fundamentally different from preparing for Red Rock or Sea Wolf. You won't gain an edge from spreadsheet drills or data interpretation practice. Here's what actually helps:

1. Develop a Consistent Decision-Making Framework

Before taking the test, decide how you approach team dynamics. Are you someone who addresses conflict directly? Do you prioritize consensus or efficiency? There's no single "right" approach, but the key is consistency. Pick a framework and stick with it across all 13 questions.

2. Study Situational Judgment Test (SJT) Principles

SFL closely resembles academic SJTs used in organizational psychology. The core principle: effective answers tend to balance assertiveness with collaboration, directness with inclusivity, and efficiency with thoroughness. Extreme answers (always deferring, always dominating) are almost never optimal.

3. Think Like a First-Year Associate

McKinsey isn't looking for CEO-level leadership here. They're looking for the judgment of an effective first-year consultant: someone who contributes meaningfully, respects expertise, manages group dynamics constructively, and keeps the work moving forward.

4. Read Carefully — This Is Text-Heavy

Unlike the more visual Sea Wolf and Red Rock modules, SFL requires close reading and interpretation of written scenarios. Rushed reading leads to missed nuance, and nuance is everything in a behavioral assessment.

5. Don't Try to "Game" It

Contradictory answers across the sequence will hurt you. If you try to guess what McKinsey wants to hear rather than applying a genuine framework, the adaptive nature of the game will expose the inconsistency. Authenticity — filtered through a structured approach — is the best strategy.

SFL vs. Other McKinsey Solve Games

What This Means for Your Overall Solve Strategy

If your test is 85 minutes, you're playing all three games. That changes your preparation calculus:

Red Rock Study (35 min) remains the analytical backbone. Practice data interpretation, percentage calculations, and structured case reasoning. The Red Rock simulation is the most direct way to build speed here.

Sea Wolf (30 min) tests optimization under pressure. The Sea Wolf Solver helps you understand the microbe selection logic, and the Sea Wolf simulation lets you practice the full game flow.

Sustainable Future Lab (20 min) adds a behavioral layer. Preparation is less about tool-based practice and more about developing a clear, consistent approach to team decision-making.

The total cognitive load of an 85-minute assessment — switching between quantitative analysis, optimization, and behavioral judgment — is substantial. Budget your mental energy accordingly.

Frequently Asked Questions

Will every candidate get Sustainable Future Lab in 2026?

Not yet. As of early 2026, SFL is appearing in select regions (Germany, Middle East, and others). Your invitation email will indicate either 65 minutes (Red Rock + Sea Wolf only) or 85 minutes (all three games including SFL). If your email says 65 minutes, you won't encounter SFL.

Is Sustainable Future Lab the same as the old Ecosystem Building game?

No. Ecosystem Building was an analytical game where you constructed a food chain from 39 species. SFL is a completely different format — it's a behavioral, scenario-based assessment focused on team decision-making, closer to a situational judgment test than a puzzle.

Can I fail Sustainable Future Lab specifically?

McKinsey hasn't disclosed how SFL scores integrate with overall Solve scoring. Based on how the Solve has historically worked — with percentile-based relative scoring — SFL likely contributes to your overall assessment alongside Red Rock and Sea Wolf. Performing poorly on any single module weakens your overall profile.

How should I answer if I don't know what McKinsey "wants"?

Apply a consistent decision-making framework rather than guessing at the "right" answer. Effective consulting judgment typically involves: acknowledging different perspectives, focusing on the highest-impact action, and balancing assertiveness with collaboration. The adaptive nature of the game rewards consistency over individual "perfect" answers.

Are there practice simulators for Sustainable Future Lab?

Dedicated SFL simulators are still emerging as the game is very new. In the meantime, practicing general SJT frameworks and reviewing McKinsey's published consulting competencies can help you prepare. Check our Sustainable Future Lab page for the latest updates and resources as they become available.

Prepare for Every Part of McKinsey Solve

Sustainable Future Lab adds complexity to an already demanding assessment, but it also adds opportunity. Candidates who understand the format early — while most applicants are still focused exclusively on Red Rock and Sea Wolf — have a real advantage.

For the analytical games, structured practice makes the difference. The Sea Wolf Solver helps you master microbe optimization logic, and the McKinsey Solve simulation suite gives you realistic practice across the full assessment. Pair that with a clear behavioral framework for SFL, and you'll be prepared for whatever combination of games McKinsey assigns you.

We're actively tracking Sustainable Future Lab developments and candidate experiences. Visit our Sustainable Future Lab page for the latest information, and check back on the blog as we publish updated strategies and analysis.