Pick a bomb for your 10 second timer
Any bomb you pick runs for 10 seconds. Round Buddy is free to play. Unlock all 50+ bombs and 140+ worlds for $4.99 with no ads. Every bomb is unique! Watch for different animations, sounds, and explosions.
For home
Unlock all 50+ bombs and 140+ worlds
Every bomb is unique, with lots of different booms, and you can put any bomb in any of 140+ animated worlds. Pay once, use on up to 5 devices. Removes all outside ads from this site.
For teachers
Classroom license
Every bomb and every world on up to 30 school devices, for one payment.
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Other timer lengths
Ten seconds is a heartbeat. This free 10 second bomb timer is built for lightning rounds, flashcard drills, and quick-fire answers where the whole point is not thinking too hard. Say the word, tap the bomb, and the first answer out of someone's mouth is the one that counts.
Teachers use it for sight words, times tables, and vocabulary sprints: show a card, start the fuse, and the class shouts the answer before the bang. Nobody has time to drift off, so ten seconds holds a wriggly group together for a whole set of cards. Our quiz timer keeps the same short presets if you want to change length mid-round.
It is also the friendliest countdown for a "you have ten seconds to decide" moment: pick a team, choose a card, name an animal beginning with B. If ten turns out to be mean, the 15 second bomb timer adds a little breathing room, and the +30s button rescues anyone caught mid-panic.
Teaching a class? The classroom timer runs the same bombs on the smartboard, with no ads on the page.