Splash is a game what you make the way for the rolling stone by moving the position of the box so that the rolling stone rise on top of the oak cask.
Move the position of the box within a fixed time so that the rolling stone does not go out!

Game rule is simple. However concerntrate it and use your brain.
If you maintain a certain success rate for a set number of times, the level will increase.
When the level goes up, the difficulty level goes up at the same time.

Did you raise level 10 or higher? You are a genius!