Find Difference!

When waiting for the subway, in the bus.
Why don't you just make my 60 seconds enjoyable?

- An easy, simple but enjoyable 4x4 puzzle!
- The more puzzles you've got in 60 seconds, the higher the score!
- Three seconds left makes it all the more fun! Bonus time!
- I can challenge my record.
- I can compete with users all over the world.
- I can collect cute icons!