Sure, here's a simple example of a playable 3D game about a ball that collects flowing cubes using JavaScript and HTML:
In this game, a ball is created using the defined `ball` object. The ball moves within the canvas, bouncing off the edges. The game loop continuously clears the canvas, updates the ball's position, and redraws the ball.
Note: This example only includes the ball's movement and does not include the collection of flowing cubes. To add cubes or other game elements, you would need to define their objects, draw them in the canvas, and handle collisions or interactions accordingly.