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A collection or bundle of assets together as a single download or purchase

Typically shoot em' up games where the emphasis is dodging a large number of bullets on the screen at once. Bullets form dense patterns on the screen that require precise controls to avoid.

Sprites are generally 2D images used in games to represent objects. They can be animated or static, and come in different styles like isometric or top-down.

Unity is a game engine for 2D, 3D, AR and more