The importance of water is a crucial element. In the game mechanics as well as in the overall art design.
In a world where water is the most important source of life it has enormous influence in the cultural and religious behavior and of course on arts and crafts. Clothing, tools and other everday objects should be decorated in visuals of water or water related symbols.
In a world where water is the most important source of life it has enormous influence on gameplay. Water is your health and your control of aging. It could even be your source of power for spells or other kinds of magic and it would be your currency. Managing this resource is the key to survival and progress…
… but should it be this important?