That is what keeps the players engaged :)
Levels 1-3 are intuitive:
- level 1 - cannot mistake the solution. Teaches you the core game.
- level 2 - showcases water. Teaches you that you cannot get far enough and you cannot solve it without the water bottle. It is not hard to tell that there is a new element and you would probably need it to finish the level.
- level 3 - the solution is pretty much guided through the water bottles visually.
- level 4 - camera changes, element of surprise. There is only one major junction that has 2/3 correct solutions. As long as you don't go down directly. Also teaches you that you cannot cross your plant later.
- level 5 - Is a maze. Quite frankly it is meant to be more confusing but also has 2 correct solutions which are not that hard to guess. Going right will lead you to a straight path up which you will continue to the left because by the time you reach the water bottle you will only have lives to reach the left one and close off the upper path. Going left you will only have lives to take the water bottle which leads you right and the only close one is the one on top which will also lead you to a window.