AT THE CASUAL DESK
Echo Intervals
Match six pairs by their pitch rather than their picture.
Pitch matching
One clear challenge.
Select two bells. Each bell has a visible pitch label and plays its tone when sound is enabled. Equal pitches remain matched. Find all six pairs; sound is optional.
No Play Credits or stakes. Your best and completed challenges are saved on this device when storage is available.
Before you play
The goal and next move appear above the field. Direction, action and settings buttons sit below the field. Start when you are ready; Pause stops time and movement. Restart creates a fresh attempt. Preview begins automatically and does not save a result.
UN-POP is for UK adults aged 18+. Read Player Care, Terms and Privacy before creating an account.