Grouping sprites using a container in PixiJS lets you manage multiple objects as a single unit. This hierarchical organization offers several benefits:

• Simplifies movement and transformations by allowing you to change a single container property to affect all its children;
• Makes it easier to build complex objects from simpler parts, such as vehicles, characters, or UI panels;
• Allows you to apply effects, scaling, or rotation to a whole group at once;
• Helps keep your scene graph organized, especially in games with many interactive or animated elements.

You will often use containers in practical scenarios like moving a character with attached equipment, animating a group of collectibles, or managing layers of backgrounds and foregrounds in a game.