In Unity, what is a common method for tracking the player's score over time?

Storing the player's score in PlayerPrefs is a viable and common method in Unity for tracking data that persists between game sessions. PlayerPrefs provides a simple way to save and load small amounts of data using key-value pairs. This is particularly useful for a player's score, as you want the score to remain intact even after quitting the game or restarting the application.

By using PlayerPrefs, you can easily save the player's score at certain points, such as when they achieve a new high score or finish a level. When the game starts again, you can retrieve this information and display it to the player, ensuring continuity in their gaming experience. PlayerPrefs is straightforward to implement and requires minimal code, making it an efficient choice for tracking scores.

Other methods may not offer the same persistence or may complicate the process. For instance, using a global variable would only retain the score during a single game session and would lose the data once the application is closed. Implementing an event listener or updating the UI directly would involve temporary tracking of the score without necessarily providing a means to save or retrieve it later.