A 15 minute bomb timer
This is a 15-minute bomb-style countdown, pre-set and ready to go — a quarter-hour deadline. Hit Light the Fuse and the big digital readout starts falling from 15:00. The stage pulses red, the warning symbols flash, and the ticks speed up as the fuse burns down. The last ten seconds shake the screen, and at zero you get a flash-of-light BOOM.
What fits in 15 minutes
Fifteen minutes is an exam section, a workshop activity, or a quarter of a lesson. Long enough for genuine work, short enough to stay a deadline rather than a session.
It suits exam sections, workshop activities and longer team games. If you need a different fuse, every other length is one tap away below, or type your own into the box.
How a 15 minute fuse feels
At a quarter of an hour the countdown becomes background until roughly the last third, which is usually when a room starts moving faster.
Before you start
The ⛶ button fills the screen, which is where the effect actually lands, and 🔊 silences the ticks and the explosion if the room is already loud. Reset defuses it early. There is a fuller rundown of the stages, the sounds and the classroom uses on the main bomb timer page.
