Pipe down

This game is a great intelligence test
Easy rules.
Familiar interface.
But can you reach the end?

You have excellent game skills if you reach level 10 in mode Marathon.
And you play better than author of the game if you reach level 20 in mode Marathon.

The rules are simple:
You need to connect the left and right parts of the screen with a pipeline.
And you need to build a long pipeline because the number of connections on the left and right is limited

The game has two modes:
Standard - every round the field with figures is cleared. The number of pipes on the left and right decreases.
Marathon - the field is not cleared from the figures. But each round is restored one pipe on the left and right.

This game works without internet connection