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Key
+10% chance to open chests for free
The Key item in Megabonk gives a 10% chance for a chest to open for free. However, the chances stack *multiplicatively*, not additively — meaning 10 Keys does not guarantee 100%.
Video Explanation
How It Works
Each Key adds another independent 10% chance for the chest to open for free.
The probability of a chest not opening for free with one Key is 90% (0.9).
With multiple Keys, you multiply that chance together:
Formula,
Chance to open = 1 − (0.9)n
Where n is the number of Keys you have.
Each Key adds another independent 10% chance for the chest to open for free.
The probability of a chest not opening for free with one Key is 90% (0.9).
With multiple Keys, you multiply that chance together:
Chance to open = 1 − (0.9)n
Where n is the number of Keys you have.
Chance Table
Odds of opening a chest for free based on # of Keys,
| Keys | Chance |
|---|
| Keys | Chance |
|---|
| Keys | Chance |
|---|
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