How to play
Briefcase Offer borrows the format of the television deal-or-walk-away shows and shrinks it to a quick game you can finish in a minute. Sixteen closed cases sit on the table. Each hides a multiple of your bet, from nothing at all up to five times what you staked. You claim one case, open the others a few at a time, and listen to a banker who wants to buy your case before you find out what’s in it.
Here is a full round:
- Pick a chip (100, 500, 1,000 or 5,000) and tap the bet spot until it shows the stake you want. The limit is 10,000 per round. Then press Start.
- Tap any case to make it yours. It stays shut until the very end.
- Open five other cases. Each one flips to show its amount, and that amount is struck off the value board beside the grid.
- The banker calls. The button reads Accept followed by the offer in credits; the other one says Keep going.
- If you keep going, open four more cases and hear a new offer, then three, then two.
- After the fourth offer is refused, only your case and one other are still closed. Choose Keep mine or Swap, and you’re paid whatever sits in the case you end up with.
When a deal is accepted, the game still opens your case so you can see what you sold. Between rounds, Rebet puts your previous stake back on the spot and Clear empties it.
What’s inside the cases
The sixteen amounts are always the same set, shuffled into new cases at the start of every round:
| Multiple of your bet | Cases |
|---|---|
| ×0, ×0.01, ×0.02, ×0.05, ×0.10 | 5 |
| ×0.20, ×0.25, ×0.40, ×0.50, ×0.75 | 5 |
| ×1, ×1.25, ×1.50, ×2 | 4 |
| ×2.50, ×5 | 2 |
Ten of the sixteen are below your stake, so most single cases lose money. Only three cases beat ×1, and only one doubles it with room to spare. The average across all sixteen is 0.9706 of your bet.
How the banker prices an offer
The offer is computed from the cases still closed, yours included. Take their average, multiply by your bet, then apply the banker’s discount for that stage:
| Offer | Cases opened so far | Share of the remaining average |
|---|---|---|
| First | 5 | 60% |
| Second | 9 | 72% |
| Third | 12 | 84% |
| Fourth | 14 | 92% |
The result is rounded down to whole credits. Because the banker never pays the full average, accepting always costs something on paper, and the cost shrinks as the game goes on: early offers lose 40% of the fair price, the last one only 8%.
Playing every round to the end returns 97.06% of your stakes over time, whatever you do with Keep mine and Swap. Taking the first offer every time returns about 58%.
Strategy
The math gives a clear baseline: if you only care about the long-run average, refuse every offer. That is the highest-return line in the game.
Real play is more interesting, because the spread of outcomes is huge. Suppose you reach the final two with ×5 and ×0.01 still closed. The fourth offer would be 92% of about ×2.5, so roughly 2.3 times your bet guaranteed, against a coin flip between a big win and almost nothing. Taking that deal costs only 8% of the average and removes the risk completely. Most players find that a fair trade.
A few guidelines that follow from the pricing:
- Late offers are the cheap ones to accept. Turning down 60% in round one and taking 92% in round four is a sensible pattern if you want some protection.
- Read the value board, not your gut. The offer scales with what’s left. If the top two amounts are gone, a small offer is correct, not stingy.
- Keep or Swap is a pure 50-50. The two remaining amounts were placed before you chose your case, and nothing you opened tells you which one is yours.
- Which cases you open doesn’t matter. Every closed case is equally likely to hold any remaining amount, so tapping in any order is fine.
For a different cash-out decision, Tower Climb asks you to stop at the right floor, and Mines lets you bank after any safe tile.
If you enjoy Briefcase Offer, try Candy Bazaar or Cappadocia Balloons next.
