This is a billiard game in a 3D space. In addition to considering the angle of the plane, you must also consider the up and down space when aiming. The difficulty is higher.
There is a line of sight as an aid when aiming, and it can also measure the collision angle based on a virtual sphere

The game is divided into continuous pass mode, free mode and special mode
In the continuous pass mode, you need to pass each level in sequence and the remaining shots will be retained to the next level.
In free mode, you can choose to play at any designated level, and the number of shots will be reset for each level
Special Mode Each level has different scenes and some special obstacles

The free mode offers three levels of difficulty:
Simple difficulty: no order requirements, just score all
Normal difficulty: Red and blue balls are scored alternately
Difficulty and difficulty: balls of multiple colors are scored in the specified color order