To war-game an investor update before you send it, put the draft letter, the numbers it cites, and who gets the email into one request, then instruct Pingpong to read it as the investor most likely to reply: open on the claim that would trigger a follow-up, flag every figure the exhibits leave soft, and say what you would change before the letter leaves the company. Do it while cash, hiring, and timeline lines can still move.
This page is for founders and chief executives writing a monthly or quarterly investor update, or a board investor letter that will go to the cap table. For a full board pack due in a few days, see review a board pack before the meeting. For seats and scenarios before a vote, see war-game a decision before the board meeting. For a single director seat that can stop a vote, see role-play the skeptical director. Executive starting points live under Pingpong for executives.
What war-gaming an investor update is for
A spell-check asks whether the letter reads cleanly. A war-game asks which line will pull a reply from the person who cares most about cash, burn, or growth. That seat opens on the runway claim that does not match the cash schedule, the ARR figure that mixes booked and recognized revenue, or the hiring plan that burns two months of runway the letter never names. Staff who drafted the update already believe the story. The war-game presses the gaps that force a rewrite while the email is still a draft.
Name the reader. A Seed lead who owns 22 percent of the round asks different questions than an independent director who joined after Series A. A blank "investor" label produces generic talk.
A worked example
This example is illustrative and does not describe a customer. The chief executive of an 80-person B2B payments company plans to send Friday's monthly update to 14 investors. The draft is 1,100 words. The pack includes a cash schedule through month 18, an ARR roll-forward, a hiring plan for 12 open roles, a churn export for the last 90 days, and a one-page note on a pilot with a national retailer.
The chief executive names one reader in the request: the Series A lead who asked for monthly cash visibility after last quarter's reforecast, and who has already replied twice this year when runway language drifted from the schedule.
A useful pass opens on the cash line. The letter says "18 months of runway at current burn." The schedule shows $4.1 million cash, $310,000 monthly burn excluding the 12 planned hires, and $420,000 burn once those roles start in 60 days. Under the hiring plan the company hits under 12 months of runway in month 7. The ARR roll-forward lists $9.4 million, but $1.1 million is a single pilot billed annually in advance that the churn export flags as cancelable on 30 days' notice. The retail pilot note calls the deal "signed"; the attached term sheet is still marked non-binding.
The chief executive changes the letter before Friday: runway stated as 11 months under the hiring plan with a table at current and hired burn, ARR split into contracted recurring and cancelable pilot, the retail line rewritten as a signed term sheet pending MSA, and a one-line ask for a 20-minute cash call if anyone wants the underlying schedule.
A request you can copy
Below are a draft investor update or board investor letter, the exhibits the numbers rest on, and the investor I care about most as a reader. Role-play as that investor for the whole reply. Open with the first line you would reply about after reading this update. Then list every cash, revenue, burn, hiring, churn, or timeline claim your seat would attack, quoting the page or line and saying what evidence would change your response. End with the conditions under which this update would still worry you, or state that you would archive it without a reply and why. Stay in the investor seat. Don't rewrite the letter for me.
Paste the cash schedule, ARR roll-forward, and any prior update that set a number this letter revises.
How Pingpong runs the war-game
The web review app sends your request through several models in order. Each later model receives the original request and every earlier answer, with instructions to assess the work so far. An early pass might open on runway math; a later pass might check whether ARR and churn use the same definitions. Check every flagged claim against the source file before you change the letter. For the steps inside the app, see running your first review.
What a model can't war-game
A model does not know which investor already decided to skip the next round, what was said on the last closed call, or which disclosure counsel has cleared for the cap table. Legal, tax, accounting, and personnel questions belong with the people responsible for those answers.
If the next step is a board vote on the same numbers, see war-game a decision before the board meeting. When directors will receive a full pack, see review a board pack before the meeting. When a director already asked a follow-up, see review a reply to a board question. More guides live under work decisions before you commit.