Controls

click and drag to rotate the camera (the cursor has to be outside the table if there is a ball in hand)
scroll to zoom into the cue ball
hover over the cue ball and press the mouse button down to choose the point of the shot
move the mouse (while the button is pressed) to change the cue elevation
keep the space button pressed to set the shot power and release it to shoot!

Rules

The game format is 8-ball

During break, at least four (4) balls must hit a wall or a ball be pocketed. Otherwise, the balls are re-racked, the next player places the ball behind the head string, and breaks.
The table is considered "open" until someone has pocketed a solid or stripe without scratching.
Each player must hit their target ball with the cue before any other ball, and some ball must hit a wall or go into a pocket, or the next player gets ball-in-hand.
After a player pockets all of their balls (solids or stripes), then hits 8-ball without scratching, they win!
If a player shoots the 8-ball in before their other balls, they lose.
If a player shoots the 8-ball in but scratches, they lose.
If a player shoots the 8-ball in but hits another ball first, they lose.