Let's study while playing on the clock.

---Clock mode---
Display the current time.
Fall down any colorful shapes at screen touch.
Enable landscape.

---Touch mode---
Touch controllable long-hand.
Show number of minutes and hour at edge of hands.
Enable landscape.

---Game mode---
Set the analogue clock at time on digital clock.
Tap the Checkmark when ready.
Control is same as touch mode.
Disable landscape.