What type of variable cannot be saved using PlayerPrefs?

PlayerPrefs is a Unity class used for storing and accessing player preferences between game sessions. It supports three primary data types: integers, floats, and strings. This means you can store and retrieve values of these types easily.

While floating-point numbers can actually be saved using PlayerPrefs, it seems there may be confusion regarding the options presented. The correct answer is that PlayerPrefs does not support a direct way to save boolean values.

To save a boolean value, you would typically convert it to an integer (0 for false, 1 for true) and then store that integer using PlayerPrefs. When you retrieve the value, you would convert it back to a boolean. This method is a common workaround since PlayerPrefs does not provide a dedicated method for boolean values.

Therefore, while integers, floats, and strings can be stored directly with PlayerPrefs, boolean values require this additional conversion step, highlighting an important distinction in the data types handled directly by PlayerPrefs.