You've done me several times since you started reading this, and didn't notice once.

AHA! Daily #001 · Wednesday 11 November · What is it?

The four clues

1. 1You've done me several times since you started reading this, and didn't notice once.
2. 2Now that I've mentioned it, you're doing me on purpose.
3. 3I take a fraction of a second, and I keep your eyes from drying out.
4. 4A wink is half of me.

In the game you get one clue at a time: solve it on clue 1 for 100 points, clue 2 for 75, clue 3 for 50, clue 4 for 25.

Why?

You blink thousands of times a day without noticing. The moment someone points it out, it becomes a manual job. Sorry about that, it goes back to automatic in a minute.

Think you can beat the clues? Every day brings three new mysteries. See more riddles and answers.

AHA! is a free daily mystery game: three lateral-thinking riddles a day, four clues each. The fewer clues you need, the more you score. No app, no sign-up.