60
seconds
One wrong character ends the run, and Backspace is switched off, so there are no second chances. Your streak of correct characters is the score.
Sudden Death is a word test with one rule: the first wrong character ends it. The moment a key does not match, the text shakes and the run is over. Backspace is disabled, so there is no fixing anything, and there is no clock either. You keep going for as long as you stay clean.
Punctuation and numbers can be turned on from the options row if you want a streak that is harder to keep.
The score is your character streak: how many correct characters you typed before the mistake. Your best is saved as a record. Speed plays no part, so there is nothing at all to gain from rushing.
Accuracy percentages hide how often you actually slip. On average, this is how many keystrokes you get between errors:
| Accuracy | Keystrokes per error, on average |
|---|---|
| 90% | 10 |
| 95% | 20 |
| 98% | 50 |
| 99% | 100 |
| 99.5% | 200 |
Going from 95% to 99% sounds small, but it means a fifth as many mistakes. Sudden Death makes that difference impossible to ignore, because every one of them ends the run.
It trains accuracy, and the calm to keep it. Most typists can type one sentence cleanly. Holding that for several hundred characters, knowing one slip ends everything, is a different skill. It is also good preparation for employer tests that do not allow corrections.
For accuracy against a clock, try Bomb Defusal. For a full timed test without Backspace, the No backspace twist on the typing challenges page gives you a normal WPM score instead of a streak.
Your score is the number of correct characters you typed before your first mistake. Speed does not come into it. A slow, perfect run beats a fast one that ends early.
No. Backspace is off. The run ends the instant you press a wrong key, so there is nothing left to correct.
Compare with your own record. A typist at 97% accuracy makes a mistake about every 33 keystrokes on average, so a streak of a few hundred characters takes very clean typing. If your runs keep ending early, slow down.