McKinsey Sustainable Futures Lab: Complete 2026 Guide
McKinsey doesn't publish pass rates, but most estimates put the failure rate around 70%. The Sustainable Futures Lab is McKinsey's newest module — a situational judgment test that evaluates how you make decisions within a team context.
What Is the Sustainable Futures Lab (SFL)?
The Sustainable Futures Lab — or SFL, sometimes written as the Sustainable Future Lab — is the third mini-game in the McKinsey Solve assessment, alongside the Sea Wolf Game (microbe selection) and the Red Rock Study. It's a situational judgment test (SJT) that evaluates how you navigate team dynamics, stakeholder management, and ethical decision-making.
In the standard version, found in 85-minute invitations, you'll face approximately 13 scenario-based questions within a 20-minute time limit. Since late August 2026, McKinsey has increased the SFL to 30 minutes in 95-minute invitations; this guide covers the standard one, and the 30-minute version in 95-minute invitations is covered on its own page. Candidates describe it as one connected storyline: a priority ranking first, then about 12 decisions where you pick one of a few paragraph-length options, and later questions build on what you chose earlier.
The branching only clicks once you've felt it: practise in the SFL simulator, or start a free Sustainable Futures Lab run. To plan the other two games around it, see the complete Solve prep guide.
A decision in SolvePrep's 20-minute lab: a line on your last choice, the new situation, a teammate's view and three or four responses to pick from.
Format & Structure
The SFL follows a sequential flow with distinct phases. Unlike Sea Wolf Game's microbe selection or Red Rock Study's data analysis, SFL is entirely text-heavy — there are no calculations, charts, or data tables.
Mission Briefing
Read who's on the team, what the project is for, the constraints and the deadline. Everything after this leans on it.
Priority Ranking
Drag four possible starting actions into order. It's the first task, and it sets the context for the storyline.
Connected Decisions
About 12 single-choice decisions in one storyline. Options are long paragraphs, and later questions pick up the consequences of earlier ones.
This is the format as candidates and prep guides describe it. McKinsey hasn't published the structure, and item counts differ slightly between accounts.
What the SFL Is Reported to Measure
McKinsey hasn't published what the Sustainable Futures Lab scores. Prep guides that describe the module consistently name five abilities:
Prioritization
Deciding what comes first when several actions matter, starting with the opening ranking.
Decision-making under uncertainty
Committing to a sensible course when you don't have every fact, instead of waiting for certainty.
Interpreting messy information
Pulling the signal out of updates, messages and team comments that don't line up neatly.
Balancing trade-offs
Weighing speed against quality, and the project against the people, without pretending there's a free option.
Team and stakeholder effectiveness
Keeping the team and outside partners working toward the goal, including when that takes an awkward conversation.
Consistency: Why the Whole Run Matters
Accounts of the SFL agree on one point: the pattern across the run counts for more than any single answer. Because the storyline is connected, a choice that looks reasonable on its own can clash with what you committed to a few questions earlier.
There's no public list of approved styles. In SolvePrep's 20-minute lab we model consistency by tagging each response with one of four decision styles (redirecting the discussion, suggesting an alternative, deferring to an expert or pushing for consensus) and scoring how concentrated your picks are, weighted by how strong they are, so a steady but weak approach doesn't score well. That's our practice rubric, not McKinsey's.
💡 Key insight: switching approach from question to question to chase the 'best' answer tends to read as inconsistent. Decide how you'll handle conflict, risk and speed before you start, and let that carry through.
Scoring: What's Known
McKinsey doesn't publish a scoring rubric or weights for the SFL, so any points table you see online is someone's model. What candidates and coaches report is narrower: the ranking and every decision count, there's no single right answer to memorize, and the consistency of your choices across the run matters.
Our simulator makes that concrete so you can train against it. The 20-minute lab awards points for the ranking, for each of the 12 decisions and for consistency, then shows you where the points went.
After a practice run, the ranking review scores each of the four actions against a defensible order: 3 points for an exact match, 1.5 one place off, 0.5 two places off.
Consistency is also where practice runs go wrong most. Across the 8,317 SFL simulator runs with a stored component breakdown, candidates lost 60.7% of the available consistency points while losing 33.5% on situational judgment — see The State of McKinsey Solve 2026.
Top 6 Strategies to Maximize Your Score
Read every option before you pick
Options are long paragraphs that can look alike at first glance. Read them all, then choose the one that fits the approach you've been taking.
Pick a decision style and stick with it
The run is read as a pattern. If you lean collaborative, lean into it throughout; switching approach to 'optimize' each question tends to backfire.
Pace yourself at about 90 seconds per task
Twenty minutes for about 13 tasks leaves roughly 90 seconds each. Give the opening ranking up to 2 minutes and keep the decisions moving.
Consider stakeholder impact in every answer
Strong answers usually account for the team, outside partners and the mission at once. One-dimensional answers look weaker.
Keep track of what you've committed to
Later questions build on earlier choices. Before each answer, check it against what you've already promised the team.
Treat the priority ranking seriously
It's the first task, and the storyline that follows builds on it. Think about impact, urgency and which actions depend on others; a sensible order usually follows a chain of prerequisites.
Free Trial vs. Full Simulator
Candidates describe the real SFL as one connected storyline: later decisions build on earlier ones. Practicing with one fixed set teaches you that set's answers, not the judgment skills you need.
Free Trial
- One full run of each version, 20 and 30 minutes
- Real clock, full format
- One fixed mission per version
- Only the first decision reviewed, no progress tracking
Full Access
- A new mission every run: 8 for the 20-minute lab, 6 for the 30-minute lab
- Full decision review and ranking review
- Both versions plus the most/least drill, unlimited runs
- Leaderboard + progress tracking
Common Mistakes That Tank Your SFL Score
Switching approach to 'optimize' each question
Picking what looks best in isolation while swinging between collaborative, directive and analytical moves makes the whole run read as inconsistent, the pattern accounts of the SFL warn about most.
Rushing through scenario text
SFL scenarios are nuanced and text-heavy. Skimming leads to missing critical context about stakeholder dynamics that changes which answer is best.
Ignoring stakeholder context
Many candidates focus only on the immediate team discussion and miss the stakeholder implications in the scenario. Better answers take more than one perspective into account.
Skimming the options
Two options can look nearly identical and differ in one key way, such as who decides or when. Read each one to the end.
Forgetting earlier commitments
The storyline carries forward. An answer that ignores a promise or plan from a few questions back reads as inconsistent, even if it's reasonable on its own.
Spending too long on priority ranking
The ranking is one of about 13 tasks. Spending 5+ minutes on it leaves too little time for the decisions that follow.
After a practice run, the decision review puts your pick next to the strongest option, with the principle that decides that type of scenario.
What the Real SFL Looks Like vs. Our Simulator
McKinsey publishes neither the scenarios nor the scoring, so any simulator is a model of the format, not a copy of it. Here's what ours does, so you know what you're practicing.
The 20-minute lab follows the shape candidates describe: you rank four actions, then make 12 connected decisions, picking one of three or four responses each time. Every decision after the first starts with a line on the result of your last pick, and three in-story updates change the picture along the way. Each run draws one of 8 missions and 12 of 52 decisions, so a second run is not a memory test. For a harder workout, the most/least drill asks for both the most and the least effective of four responses.
After the run you get something the real test never gives you: a percent score split into three pillars, where you lost points by scenario type, and a review of your ranking and of every decision. The 30-minute mode for 95-minute invitations works differently and is covered in the 85- vs 95-minute guide.
Sustainable Futures Lab FAQ
Is there a new version of the Sustainable Futures Lab?
Yes. Since late August 2026, McKinsey has increased the SFL to 30 minutes in 95-minute invitations and rebuilt it around managing a small research team over three simulated days. Some candidates still get 85-minute invitations with the 20-minute version this guide covers, so the new one appears to be in pilot. McKinsey confirms a new version of Solve is in pilot but hasn't published a name, mechanics or scoring for it. See the full breakdown on the page linked above.
Does SolvePrep's SFL simulator cover the 30-minute version?
Yes. Our updated simulator runs both: flip the switch between the standard 20-minute SFL described on this page and the 30-minute version from 95-minute invitations, so you practice for the test you're actually invited to.
How long is the Sustainable Futures Lab?
20 minutes in the standard version (85-minute invitations) and 30 minutes in the new version (95-minute invitations).
You Get ONE Shot at the Real Solve
The SFL is McKinsey's newest module — and most candidates have zero preparation for situational judgment tests. Those who practiced with our simulator reported feeling significantly more confident and making faster, more consistent decisions.
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