MBB Assessment Prep — Updated for 2026
You get one shot at McKinsey, BCG & Bain. Simulate the online test first.
500+ original AI-generated practice scenarios across all major assessment formats. Built by our editorial team — not sourced from any proprietary materials.
500+Free cases
500+Research reports analyzed
92%Format match rate
Choose Your Assessment Prep
McKinsey & Company
McKinsey Assessment Prep
- Problem Solving Game (PSG) — 60+ scenarios developed and verified by our ex-MBB consultants
- Redrock Study — full data sets & solutions we reconstructed
- SeatBolt — timed practice with scoring
- Ecosystem Building — 40+ mini-cases by our research team
Boston Consulting Group
BCG Assessment Prep
- Detailed BCG Guidebook — format breakdown, scoring logic & strategy
- Casey Chatbot — 30+ cases built built by our AI and editorial team
- HireVue Video Recording — practice & replay your responses
- 5 Key Cases — the scenarios that matter most, updated monthly
Bain & Company
Bain Assessment Prep
- HireVue Assessment — 45+ video prompts we compiled
- BOVA Online Test — 70+ practice questions
- TestGorilla — cognitive & situational sets curated by our team
- SHL & Pymetrics — complete prep bundles
AI Interview Simulation
AI Case Interview
- Voice-to-voice — practice with real-time AI pushback
- 50+ McKinsey-style cases included
- Scored on Structure, Accuracy & Confidence
- Audio replay so you actually improve
No Account Required
Free Practice Materials
Start here. Sample real assessment formats before you commit — no sign-up, no credit card.
Free — 5 casesCase Framework Guide
5 free profitability & market entry cases with step-by-step frameworks. See how MBB structures questions — then decide if you need the full bank.
Practice Free
Free — 10 drillsMental Math Warm-Up
10 timed chart interpretation and market sizing drills. The same data complexity you'll face in the PSG — practice until the format feels automatic.
Start Drills
Free — 20 questionsPEI Question Bank (Free)
20 Personal Experience Interview questions organized by theme. Model answer structures from candidates who received MBB offers.
View Questions
Free — 500+ casesCase Library — 500+ Cases
500+ written case studies you can read, filter, and study at your own pace. Q&A breakdowns, difficulty ratings, and structured solutions — all free, no AI, no paywall.
Browse Cases
Free — Free guidesCandidate Prep Blog
Recruiting timelines, test format breakdowns, and strategy guides. Updated every cycle with the latest industry research.
Read the BlogLike what you see? Unlock the full 500+ case library
500+
Free cases in our library
500+
Candidate debriefs collected
92%
Said our simulations matched the actual assessment
Q1 2026
Latest question bank update
What Candidates Are Saying
“The Casey Chatbot questions were almost identical to what I saw in the real BCG test. I recognized the chart formats, the question phrasing, even the way data was structured. Felt like a re-take, not a first attempt. I contacted their support team with a question and got a response within hours.”
Verified Candidate
BCG offer, 2025 cycle, Top-3 Strategy Firm
“I failed the McKinsey PSG cold the first time. Found DrillCase, drilled 40+ scenarios over two weeks, and passed on my re-application. You can tell the team behind this actually understands the process — the question formats were spot-on.”
Verified Candidate
McKinsey PSG, second attempt pass, MBB Firm
“Spent three months with generic casebooks and bombed every online assessment. DrillCase had the actual test formats — SOVA, Casey, PSG — not just theory. Passed all three firms in the same cycle.”
Verified Candidate
All 3 MBB assessments passed, MBB Offer Holder
Trusted by candidates targeting
McKinsey & CompanyBCGBain & CompanyDeloitteKearneyOliver WymanMT Program
Source: candidates who used DrillCase in the 2024–2026 recruiting cycles. Not affiliated with, endorsed by, or sponsored by any firm listed.
Why our questions are different
100% original content
Every question is independently created by our AI engine and editorial team. We design original scenarios that mirror the skill categories tested in business assessments — no proprietary content is used.
Updated every cycle
Assessment formats evolve. Our research team tracks publicly available information about format changes and creates new original questions to keep the question bank current and relevant.
Verified by candidates
92% of users report that our simulations effectively prepared them for their assessments. Our team of educators has deep domain expertise — we built the prep platform we wished existed.
Focus on what matters
We focus on the skill categories that matter most: logical reasoning, data analysis, structured thinking, and communication. No filler — just targeted practice that builds real competence.
We built the prep system every candidate deserves.
500+ cases in our library. Every MBB assessment format. Updated for the 2026 recruiting season. Try 5 cases free — see how close they are to the real thing. Full refund within 7 days, no questions asked.