BCG Casey practiceChatbot Case Complete
For anyone with a BCG online case invitation and a few days to prepare
Casey won't tell you what you got wrong. Find out here first.
Candidates report that in BCG's chatbot case every answer is final and the result is pass or fail. Chatbot Case Complete gives you 20 timed chatbot cases where every answer comes back with its points and its working, before the one that counts.
Get Chatbot Case Complete — $199
One payment, lifetime access. Full refund within 7 days if you've opened 3 cases or fewer (the free demo case counts).
Not sure yet? Play the Union Commercial Bank case free. No sign-in, no card.
Just got your invitation? Check if it's Casey or the CCA, free →
- 20 Casey-style cases on a running clock, one question at a time, so committing an answer and moving on stops feeling reckless
- The working for every question and a model answer for every written one, so a wrong number teaches you the method, not just the answer
- Points per question after every case, so you know whether the charts, the math or the written answers cost you
- A plan to your test date and a daily 60-second video rep, so the camera at the end isn't the first time you face it
Part 2Why Casey catches prepared people out
Same case skills. A one-way delivery.
Casey tests case-interview skills. The delivery is different, and the difference is where prepared candidates report getting lost.
It only goes forward. Candidates report
Questions arrive one at a time and a submitted answer can't be changed.
A clock, exhibits, and no interviewer. BCG says
BCG says about 30 minutes. Charts open beside the chat while the clock runs, and nobody tells you when your structure drifts.
Pass or fail, nothing else. Candidates report
Candidates report no breakdown. You never learn which answer cost you.
BCG publishes the length, language and chatbot format; the rest is candidate-reported. Sources in our Casey guide, checked 23 September 2026.
If you've done case interviews and still lost the thread at question six, that isn't a gap in you. An interviewer tells you when you're off track. Casey doesn't.
Part 3The method
The Forward-Only Drill: Commit, Check, Carry
- 01CommitAnswer each question on the clock and move on. No going back, same as the real one.
- 02CheckRead the points and the working for every question, right or wrong.
- 03CarryTake the fix into a new case, in a different industry, the same day.
Chatbot Case Complete is where you do all three: 20 cases, each ending with its breakdown.
Part 4What's inside
20 cases plus the free one, from a bank to a highway
- Long text
- Multi-select
- Single-select
- Numeric
- Video
- Dataset picks, calculations, chart reads and written recommendations, mixed as in the reports, so no question type is new on the day
- Exhibits that open beside the chat, so reading a table while the clock runs becomes routine
- Clocks of 35–40 minutes per case, so you can practise finishing inside BCG's stated 30
- Every case ends with the recorded 60-second video: a minute to prepare, then the camera starts on its own, one take in exam mode, so the last screen is rehearsed, not met
- An answer key you can print or save as PDF after every case, so your review doesn't need the site open
Exhibit 4 · The case files, live from our case list, with the plan that opens each one
Who it's for
Read this before you pay
For you if
- You have a Casey invitation and a few days to a few weeks
- You've done case interviews but never answered a chatbot against a clock
- You might reapply next cycle and don't want to pay again
- You want to know which question types cost you
Not for you if
- You want a pass guaranteed. Nobody honest can
- You want BCG's real cases. BCG doesn't publish them, and no practice case will be the one you get
- Your invitation is for BCG's CCA or another test. Read the Casey vs CCA guide first
- You can only practise on a phone. Our case screen puts exhibits beside the chat and is built for a laptop or desktop
Part 5Proof
Don't take our word. Play a whole case instead.
The Union Commercial Bank case, free.
12 questions, 40 minutes, the same engine as the paid cases, ending with the same breakdown and answer key. No sign-in, no card.
Play it free →Format checked on 23 September 2026.
Every claim about the real Casey says whether BCG said it or candidates reported it, with a link.
See the sources →Numbers you can count.
Our database holds 29 unique Casey-style cases, so we say 29. A duplicate doesn't count twice.
How we count →
Exhibit 5
The full case screen of the free case
Part 6What comes with Complete
Three tools to use with Chatbot Case Complete
- B1
A plan to your test date.
Tell us your date and minutes a day. You get foundations, the free case, then your Complete cases one by one, and a checklist for the evening before (calculator rule from your invite, camera check, no new cases).
For when you're thinking: “I only have three days.”
Open the plan - B2
Casey math warm-ups.
50 drills each on percentages, margin, growth rate, unit economics and break-even, the skills the plan drills for BCG.
For when you're thinking: “One slip in the math and the case is gone.”
Try a drill - B3
The 60-second video rep.
Every case ends with the recorded video step: one take in exam mode, the way most candidates report the real test. Then you replay it and check three things: the decision in the first 10 seconds, three reasons each with a number from the case, one next step at the close. Our guide has the 10/35/15-second script.
For when you're thinking: “The camera at the end will throw me.”
Read the script guide
The plan, the warm-ups and the video guide are free to everyone on DrillCase; the video step is part of every case. What Complete adds is your 20 cases slotted into the plan. We list them because they're how Complete is meant to be used, and we don't put a price on them.
Get Chatbot Case Complete — $199
Checkout by Polar. Your 20 cases unlock as soon as payment is confirmed.
Exhibit 6
What the plan drills for BCG, before your cases
- 01Percentages50 drills
- 02Margin50 drills
- 03Growth rate50 drills
- 04Unit economics50 drills
- 05Break-even50 drills
- thenThe free case, then your 20 cases one by one
Who builds this
DrillCase is an independent practice site, founded in 2026. We don't publish ratings or pass rates, and we won't invent reviews. That's why a whole case is free to play.
From our inbox
Answer first, check second.
Sorry for the late reply to this one. Short version: passed Casey, finished final rounds in Dallas last week, offer came this morning. So, well.
Longer version: five days before the deadline, my wife found me at the kitchen table at 11pm doing long division on a napkin, telling her I should withdraw. Three years at a Big 4 firm and I was falling apart on typed math.
The feedback on case 4 (which I blew completely) was blunt: over-structuring, under-calculating. Answer first, check second. By case 6 it clicked. Got through 9 of the 20.
I still have the napkin.
What fixed it: your explanations show every calc step, so I started writing each step on paper before typing.
Read the whole email
It went well, and my first-round invite came through this week! A few notes in case they help other people:
- • I had 3 days from invite to deadline. BCG's own sample felt nothing like the real chatbot.
- • Night one (on a different site) I forgot to multiply revenue by the number of stores, and everything from Q6 on was wrong. Scariest moment of recruiting so far.
- • What fixed it: your explanations show every calc step, so I started writing each step on paper before typing. Case 3 was clean. On case 5 I caught my own slip.
- • Mine allowed an on-screen calculator, fyi.
Thanks for building this. I'm telling my whole section.
The sample answers were the most useful part.
Read the whole email
Passed, live interview Thursday. The sample answers were the most useful part. I was basically writing essays to a chatbot. Would love per-question timers.
Emails from paying users, shared with their permission. We don't track real-test results; yours will depend on your preparation.
Part 7Chatbot Case Complete · one payment
20 chatbot cases. Every answer explained. Yours for good.
Why $199, once? It's in the middle of what Casey simulators cost elsewhere, and candidates reapply. If you do, you don't pay again.
A case-coaching session cost about $60 to $430 at the coaching sites we checked on 26 Sep 2026.
Chatbot Case Complete
$199 lifetime · one payment
- 20 Casey-style cases + the free UCB case
- Points and working for every question
- Answer key PDF after every case
- The 60-second video step on every case
- Lifetime access
Free to everyone, filled with your cases: a plan to your test date, math warm-ups for the 5 Casey skills.
Get Chatbot Case Complete — $199Exhibit 7 · What each plan opens
- FRUnion Commercial Bank · free for everyoneFree demo case, open to everyone.
21 cases you can open · $199 · lifetime · 7 days if ≤ 3 cases opened
Get Chatbot Case Complete — $199| Starter | Complete | All-Access | |
|---|---|---|---|
| Casey-style cases (+ the free one) | 14 | 20 | All 29 |
| Points, working and answer key on every case | ✓ | ✓ | ✓ |
| 60-second video step | Every case | Every case | Every case |
| Access | 1 year | Lifetime | Lifetime |
| Solve VIP and Comprehensive (Bain-style) | — | — | ✓ |
| Refund | Final sale | 7 days if ≤ 3 cases opened | 7 days, even if used |
| Price | $99 | $199 | $250 |
- StarterYour invitation is days away and 14 cases will do? Chatbot Case Starter is $99 for 1 year. It's also final sale. See Chatbot Case Starter
- All-AccessWant all 29 cases, or applying to McKinsey or Bain too? The All-Access Pass is $250 for every DrillCase product, and it's the one BCG option with a 7-day refund, even if you've used it. The top plans bought separately come to $457. See the All-Access Pass
Before you buy
The questions people ask before they pay
Is DrillCase affiliated with BCG?
No. DrillCase is independent and not affiliated with, endorsed by or sponsored by Boston Consulting Group. BCG doesn't publish its Casey cases, so no practice tool can promise the case you'll get.
How close is it to the real Casey?
It has the delivery candidates report: a chatbot thread, exhibits beside it, a running clock, one question at a time with no going back, and the answer formats they describe. BCG doesn't publish its cases or scoring, so no practice tool can promise identical content.
How is my answer scored?
Choice and numeric answers are checked against the key; in a multi-select, each wrong pick cancels half of a correct one. Written answers under 15 words score 0; a full answer earns half marks, plus the rest for covering the key ideas in the model answer. The video isn't scored. Treat the score as a guide to what to practise, not a prediction.
Why are your cases 35–40 minutes when BCG says about 30?
Our cases run 5 to 15 questions, so we give a little more room. Aim to finish inside 30 and you've practised the real pace.
Does every case have the video step?
Yes. Every case, including the free one, ends with the video step: 60 seconds to prepare, then recording starts on its own for 60 seconds. Exam mode gives you one take, which is what most prep sites now report for the real video step; coach mode lets you retake it. It is not graded: you replay your take and check it for the answer first, three reasons each with a number, and a next step.
Can I get a refund?
Complete: yes, in full within 7 days if you've opened 3 cases or fewer (the free Union Commercial Bank case counts). Starter is final sale, because the cases and answer keys open in full when you pay, so play the Union Commercial Bank case free first, on the same engine. A duplicate purchase is always refunded; if you paid and never got access, we fix it or refund you.
Starter or Complete?
Starter ($99, 1 year) has 14 cases; it's cheaper per case and enough for one short window. Complete ($199, lifetime) adds 6 cases and never expires, for longer runs or a second cycle.
Complete or All-Access?
All-Access ($250) opens all 29 Casey-style cases plus McKinsey Solve-style and Bain-style practice, with a 7-day refund. If BCG is your only test, Complete is enough.
I only have a few days. Is it worth it?
Two timed cases a day is about 2 hours with review. Start with the free case tonight. If that already feels familiar, Starter may be enough.
Can I use a calculator?
Candidates report one is allowed, and some mention Excel, but BCG hasn't published a Casey rule. Follow your invitation. Our plan's checklist asks you to set up whatever it allows.
Is it a subscription?
No. One payment. Nothing renews.
Do you publish pass rates or reviews?
Reviews, yes: emails from paying users, published word for word with their permission. Pass rates, no. We have no independent data on how users do on the real Casey, so we quote none.
What happens after I pay?
You pay on Polar and return to DrillCase. Once payment is confirmed, your 20 cases unlock on the practice page. Start with one you haven't seen, on the clock.
Not sure your invitation means Casey? Decode it free: pick the test it names, see its clock, and get a plan to your test date.
Read up:Casey guideThe dataset selection questionThe 60-second video recommendationBCG Casey vs the CCA
Your invitation gives you a few days, and candidates report no second try at Casey. Every case you play before then is an answer you get to check. That's the only deadline on this page.
DrillCase · BCGChatbot Case Complete
Everything in Chatbot Case Complete
- 20 timed Casey-style cases + the free one
- Points and working for every question
- Answer key PDF
- The 60-second video step on every case
- A plan to your test date
- Math warm-ups
- Lifetime access
- 7-day refund if ≤ 3 cases opened
Get Chatbot Case Complete — $199
If your test date is this week, start tonight: the free case first, then your first timed case.
— DrillCase
P.S. If you scrolled straight here: Chatbot Case Complete is $199 once for 20 timed Casey-style chatbot cases, each ending with the points and the working for every answer. Full refund within 7 days if you've opened 3 cases or fewer, so play the Union Commercial Bank case free first. Get Chatbot Case Complete — $199
Practice makes the format familiar. It can't guarantee a result, and we don't claim it does. Independent practice. Not affiliated with McKinsey, BCG or Bain. Counts checked 2026-09-23.