One Square

Version 1.2:
- Integrate Google game services leaderboard
- Force close fixed on some devices

Version 1.1.1:
- Full screen on all devices
- Added music control button
- Sound and light effect warning for new wave
- Lower sound volume
- Some small bugs fixed

Version 1.1:
- Added exit function (use back button)
- More precise square position
- Small graphic bug fixed
- Optimize assets (smaller apk size)
- Showing instruction text on retry screen