Be quiet together and the animals come out. Stay calm until everyone visits and a surprise guest rewards the whole class.
Choose a world
✓ Ready to use offline. You can also install it as an app from the browser menu.
Teacher tips and shortcuts
On start, the game listens to your room for 3 seconds and sets the "too loud" line just above it. If the room changes (a fan, rain, the air conditioner), press the level button in the top-left toolbar or C to measure it again.
Each round a different mix of visitors comes out. Look out for rare golden ones!
Put the computer roughly in the middle of the room. A cough or dropped pencil won't count; sustained talking will.
To change the sensitivity while playing, drag the white "too loud" line on the meter, or use the −/+ buttons beside it (or ↓/↑). The game remembers it. P pauses, F is full screen, M mutes, Esc opens this menu.
Sound is processed only in this browser. Nothing is recorded or sent anywhere.