Classroom Noise Monitor👻 Sleepy Ghost House 👻
When the class is quiet, the little ghosts tuck into bed and their windows glow with a sleepy nightlight. When it gets too loud, the ghosts wake up and float away. Shhh, let them sleep!
Class goal: Get all nine ghosts fast asleep before the lesson ends!
Your browser will ask permission to use the microphone.
Sound stays on this computer. Nothing is recorded or sent anywhere.
How Sleepy Ghost House works
1. Turn the lights out
Choose a lesson length, press Lights Out, and allow the microphone. The monitor listens for a moment to learn how your room sounds when it is calm.
2. Calm tucks the ghosts in
While the class is quiet, nine little ghosts appear in the windows of a moonlit house, pull up their blankets and fall asleep one by one, each window glowing with a soft nightlight.
3. Noise wakes them up
Too much noise makes the ghosts' eyes pop open, and if it carries on they float right out of bed and the windows go dark again. Tip: whisper 'shhh, the ghosts are sleeping' instead of asking for quiet and watch the class play along.
Explore more themes
Traffic Lights
FREEThe classic traffic light noise monitor, full screen! The light stays green and little cars cruise across town while the class is quiet. Too loud turns it red and jams the traffic.
Quiet Jungle
FREEKeep your class quiet and watch a jungle grow full screen! Trees grow when the classroom is calm and wilt when it gets too loud.
Dino Valley
FREEKeep your class quiet and hatch baby dinosaurs from their eggs! Too much noise wakes the volcano and scares the dinos back into their shells.
Focus Mode
FREEA calm, minimal noise level meter with no cartoons: a breathing light grows with silence and pauses when the room gets loud. Made for older students, exams, libraries and study halls.
Bouncy Balls
FREEThe classic bouncy balls noise meter, flipped to reward calm! Colorful playground balls bounce while your class stays quiet. Too much noise stops the fun and deflates them.
Pumpkin Patch
PROKeep your class quiet and grow nine pumpkins into glowing jack-o'-lanterns! The autumn wind blows the candles out when the classroom gets too loud. Perfect for October.
Moonlit Bats
PROKeep your class quiet and guide nine bats home across the full moon to their cave! Noise startles the bats and sends them fluttering back out into the night.
Butterfly Garden
PROKeep your class quiet and raise nine butterflies from egg to wing! Caterpillars munch, chrysalises ripen and butterflies emerge while the room stays calm: a living life-cycle lesson.
Robot Factory
PROKeep your class quiet and assemble nine little robots on a factory line! The machines pause and amber beacons spin when the room gets loud. Finished robots are never lost.
Ant Colony
PROKeep your class quiet and help busy ants dig an underground colony, chamber by chamber! The digging stops and the tunnels crumble when it gets too loud.
Snail Race
PROKeep your class quiet and cheer nine snails along the garden racetrack! The snails hide in their shells when the classroom gets too loud. Slow and steady wins.
Pirate Treasure
PROKeep your class quiet and fill a pirate chest with treasure! The ship sails toward the island while the room stays calm, and a storm brews when it gets too loud.
Coral Reef
PROKeep your class quiet and watch a coral reef bloom full screen! Corals grow and fish arrive when the classroom is calm, and the reef bleaches when it gets too loud.
Train Journey
PROKeep your class quiet and ride a steam train across the countryside, station by station! The signal turns red and the train stops when it gets too loud.
Space Launch
PROKeep your class quiet to build, fuel and launch rockets to every planet! The countdown holds when the classroom gets too loud.
Wizard School
PROKeep your class quiet and brew nine glowing magic potions in a wizard classroom! The cauldron fizzles and the magic drains away when it gets too loud.
Fairy Village
PROKeep your class quiet and light up a fairy village of mushroom houses! Glowing windows and fireflies fill the glade, until the wind blows the lights out.
Castle Builders
PROKeep your class quiet and build a castle stone by stone! The builders stop and the scaffolding shakes when the classroom gets too loud.
Winter Aurora
PROKeep your class quiet to build a snowman and make the northern lights bloom! Too much noise kicks up a blizzard that blows the snow away.
Balloon Journey
PROKeep your class quiet and ride a hot air balloon from the fields to the stars! The balloon sinks when the classroom gets too loud.
Or head back to the classroom noise monitor homepage for the full overview and FAQ.
Sleepy Ghost House questions
Is Sleepy Ghost House free to use?
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Sleepy Ghost House is a Pro theme. Lifetime Pro is a one-time $20 payment that unlocks every theme, unlimited session time, and priority support. You can try the monitor for free first with the Quiet Jungle, Dino Valley, Traffic Lights, Focus Mode, and Bouncy Balls themes.
Can the class lose progress in Sleepy Ghost House?
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Yes: this one is a 'don't wake the ghosts' game. Noise wakes the sleepers, and if it goes on they drift out of their windows, so the class has to settle them back down. The whole house can always be put to sleep again.
What age group is Sleepy Ghost House best for?
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Sleepy Ghost House is a favourite from kindergarten to about grade 4. The ghosts are round, friendly and rosy-cheeked, so even nervous little ones enjoy it. It is the openly Halloween theme of the autumn set.
The Sleepy Ghost House scene isn't reacting to sound. What should I check?
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Your computer is probably listening to the wrong microphone. Interactive whiteboards often take over as the default mic when they're connected. During a session, open the settings (the tune icon in the top right) and pick your computer's built-in microphone. The choice is remembered for future sessions.