itch.io

OK,thanks for your feedback. However, Your example is the core puzzle of the second level.  I hope players could experience the joy of "discovering a solution to a puzzle that they believe cannot be solved".

But I can give you a little hint.

First, if you read the instruction before level2, you could discover that player need to push the train carriage.

Second, if you go to the map on the left side of the carriage, you could find another door activator which is outdoor.

Third, the instruction before level1 notices player this train is driven by magnetic 

I have modified some levels and added implicit guidance to the instructions for each level, hoping to bring you a better gaming experience

Let me tell by outlining. 

The win condition of every level is put your player on the white hollow square. 

The victory strategy of the first level is open door of the railway carriage on the upper rigt corner.  You may find that the door is locked from  inside， so can you find an unlocking device placed outdoor?

Could you tell me more about your confusion?

哇，谢谢提醒。