# SolvePrep > The complete McKinsey Solve simulation — 2026 update. AI-powered practice for all three mini-games: Sea Wolf, Red Rock Study, and Sustainable Futures Lab. SolvePrep helps consulting candidates prepare for the McKinsey Solve assessment (formerly the Imbellus / Problem-Solving Game). It provides realistic browser-based simulators for each of the three current Solve mini-games, with AI-driven scoring, detailed feedback, and unlimited replays on paid tiers. Each simulator can be tried free (one play, no credit card required) before upgrading. ## Guides - [McKinsey Solve Guide Hub](/mckinsey-solve/guide): Overview of the full McKinsey Solve assessment, scoring, and 2026 changes. - [Sea Wolf Strategy Guide](/mckinsey-solve/guide/seawolf): How to pick the right microbes to clean 3 contaminated ocean sites in the 2026 Sea Wolf mini-game — attribute ranges, desirable/undesirable traits, and the 5-step flow. - [Red Rock Study Guide](/mckinsey-solve/guide/redrock): Walkthrough of the Red Rock Study (case-based investigation) game. - [Sustainable Futures Lab Guide](/mckinsey-solve/guide/sustainable-future-lab): Strategy for the SFL situational judgment / team scenarios mini-game. - [McKinsey Digital Assessment Guide](/mckinsey-solve/guide/digital-assessment): Full 2026 guide to the McKinsey digital assessment — what it is, the 3 mini-games (Sea Wolf, Red Rock, Sustainable Futures Lab), timing, scoring, and a 4-week prep plan. - [McKinsey Solve 7-Day Prep Plan](/mckinsey-solve/guide/prep-plan): Day-by-day McKinsey Solve practice plan for the 2026 format (~12 hours total) with a compressed 3-day version for tight invites. - [McKinsey Ecosystem Game (Retired) Explainer](/mckinsey-solve/guide/ecosystem-game): The Ecosystem Building game (8 species, food chain, calorie balance) was retired from the McKinsey Solve assessment in early 2026. This page explains what it was, why it was retired, and what replaced it (the Sea Wolf microbe-selection game). Historical reference for anyone Googling "McKinsey ecosystem game". - [McKinsey PSG Simulation Guide](/mckinsey-solve/guide/psg-simulation): The PSG / Solve / Imbellus naming history, what the 2026 PSG contains (Sea Wolf, Red Rock, SFL), what a realistic simulator needs, time + scoring per game, and why most free PSG sims fall short. - [McKinsey Solve Tips](/mckinsey-solve/guide/tips): 17 tactical tips for the 2026 Solve — pacing, exhibit reading, calculator discipline, SFL judgment, and the 5 mistakes that tank otherwise-good scores. - [How to Prepare for McKinsey Solve](/mckinsey-solve/guide/how-to-prepare): The 4-phase methodology (diagnose → target → drill → calibrate) for candidates with 2+ weeks of runway who want a framework rather than a fixed calendar. - [Free McKinsey PSG Simulation](/mckinsey-solve/guide/free-psg): Where to play the PSG simulation free in 2026 — all 3 mini-games, no credit card. - [Best McKinsey Solve Prep Tools 2026](/mckinsey-solve/guide/best-prep-tools-2026): Honest 2026 comparison of simulators (SolvePrep, PrepMatter), courses (IGotAnOffer, MConsultingPrep), free options, and 1:1 coaching — ranked by realism, scoring fidelity, free tier, and price, with explicit per-persona recommendations. - [MBB Assessment Comparison](/mckinsey-solve/guide/mbb-assessments-comparison): Honest 2026 comparison of McKinsey Solve vs BCG Casey vs Bain SOVA — format, duration, what each measures, side-by-side table, what prep transfers across all three, and which to prioritise by candidate situation. ## Simulators - [Simulator Hub](/mckinsey-solve/simulation): Index of all three McKinsey Solve simulators. - [Sea Wolf Simulator](/mckinsey-solve/simulation/seawolf): Full microbe-selection practice with AI scoring across 3 contaminated ocean sites. - [Sea Wolf Free Trial](/mckinsey-solve/simulation/seawolf/free): One free Sea Wolf play, no credit card required. - [Red Rock Simulator](/mckinsey-solve/simulation/redrock): Full Red Rock Study practice with multiple variant packs. - [Red Rock Free Trial](/mckinsey-solve/simulation/redrock/free): One free Red Rock play, no credit card required. - [Sustainable Futures Lab Simulator](/mckinsey-solve/simulation/sustainable-future-lab): 20-minute SFL practice with adaptive branching scenarios. - [SFL Free Trial](/mckinsey-solve/simulation/sustainable-future-lab/free): One free SFL play, no credit card required. ## Tools - [Solve Tools Hub](/mckinsey-solve/tools): Utilities and helpers for Solve preparation. - [Sea Wolf Solver](/mckinsey-solve/tools/seawolfsolver): Brute-force solver that finds optimal Sea Wolf microbe selections (3-per-site) for study and review. - [Score Estimator](/mckinsey-solve/tools/score-estimator): Interactive tool that estimates your likely McKinsey Solve score based on practice simulator performance and calibrated difficulty curves. - [Readiness Quiz](/mckinsey-solve/tools/readiness-quiz): Free 10-question diagnostic that returns a red/yellow/green readiness verdict, identifies your weakest game, and estimates time-to-ready. ## Research - [Research Hub](/research): Index of original SolvePrep research on the McKinsey Solve assessment — failure patterns, score distributions, and prep-time benchmarks from real candidate data. - [Sea Wolf Failure Patterns (n=312)](/research/sea-wolf-failure-patterns): Founder-led qualitative synthesis of 312 self-reported McKinsey Solve Sea Wolf attempts — the 5 patterns that separate passers from rejects, with frequencies, quotes, and fixes. ## Blog - [Blog Index](/blog): Articles on McKinsey Solve strategy, updates, and preparation tips. - [The McKinsey Solve Game Explained](/blog/mckinsey-solve-game): Full explainer on what Solve is and how to prepare. - [Sustainable Futures Lab Simulator Deep Dive](/blog/sustainable-future-lab-simulator): How the SFL works and how to practice it. - [What Reddit Gets Right and Wrong About McKinsey Solve](/blog/mckinsey-solve-reddit): Fact-check of 7 of the most upvoted r/consulting and r/mckinsey claims about the 2026 Solve assessment, grounded in 1,200+ SolvePrep simulator attempts. - [SolvePrep vs PrepMatter (2026 Comparison)](/blog/solveprep-vs-prepmatter): Honest side-by-side comparison of SolvePrep and PrepMatter for McKinsey Solve practice — 2026 format coverage, free tier, scoring detail, pricing, and per-persona recommendations. - [From Imbellus to McKinsey Solve (2026)](/blog/imbellus-to-solve): Naming history from Imbellus → PSG → McKinsey Solve, what stayed the same, what actually changed in 2026, which old prep advice still works, and where to practice the current format. ## Optional - [Pricing](/pricing): Tiers and what each plan unlocks. - [Privacy Policy](/privacy): How SolvePrep handles user data. - [Terms of Service](/terms): Terms of use for the platform.