How do I unlock the water category in Little Alchemy 2?

In Little Alchemy 2, the Water category is not something you "unlock" in the traditional sense. Instead, Water is one of the four basic starting elements in the game, along with Air, Earth, and Fire. This means you already have access to Water from the very beginning of the game.

If you're asking about how to create Water or elements related to it, here are some key combinations involving Water:

1. Water + Water = Puddle
2. Water + Earth = Mud
3. Water + Fire = Steam
4. Water + Air = Rain
5. Water + Stone = Sand
6. Water + Plant = Algae
7. Water + Lava = Stone

If you're looking to expand your collection of elements, experimenting with Water in combination with other basic elements is a great way to start. For example:

- Water + Fire = Steam
- Steam + Air = Cloud
- Cloud + Water = Rain
- Rain + Earth = Plant

These combinations will help you progress and unlock more elements in the game. If you're looking for something specific related to Water, feel free to ask, and I can provide more detailed guidance!