I'm working on a small quiz app and I need to display a countdown. The app will be mostly used on PC/tablets but I have to think about mobiles too.
The UI is minimalist and clear (i. e. think Material Design)
Let's say the player has 20 seconds to make a choice (i. e. one click).
Even if it's a crucial data, I don't want to disturb the user too much with a big countdown on the screen. It has to be seen but not too much.
I was thinking about a thin progress bar. Is it clear enough? Do you think it should be progressive (0 to 100%) or decreasing(100 to 0%)?
What about a simple Time remaining : X seconds or just a decreasing number? I'm looking for something clear but a bit more original than a simple number countdown. Anyway, if I use a number countdown, should I include decimals?
Do you think about any other alternatives?