This code-along builds a complete arcade twin-stick shooter from the real, tested @babylonjsmarket components. You start with an empty arena — lights, a top-down camera, a floor, and cover walls — then add a ship that moves with WASD and aims separately with the arrow keys, a pool of bullets that reuses its objects instead of allocating during a fight, an animated enemy that chases you only when no cover blocks its line of sight, a spawner that pulls waves of enemies from a reused pool, and the health and score bookkeeping that turns it into a game. Each part is a separate ECS component that talks to the others over the EventBus and never reaches into another. Every component code block is a verbatim slice of live @babylonjsmarket source (the scene-JSON blocks are illustrative subsets), and the scene you assemble ends equal to the library's own TwinStickArena scene.