How to play Pressure Valve

1. A needle sweeps back and forth across a pressure gauge.
2. A yellow band marks the safe zone. Press Lock (or Space, or tap the gauge) while the needle is inside it.
3. Every successful lock moves the band, makes it narrower and speeds the needle up.
4. Land in the darker middle of the band for a perfect lock worth two points.
5. Miss three times and the boiler gives up. Your score is the number of locks.

Tips

• Watch the needle's rhythm for one full sweep before your first press.
• Press slightly early: there is a short human delay between seeing and pressing.
• Perfect locks are worth chasing early, while the band is still wide.
• When the band gets tiny, stop chasing perfects and just stay alive.

Daily challenge

Once a day everyone gets the same round of Pressure Valve. You get one try, and your result is ready to share. A new one starts at midnight, your time.