立体４目並べ（重力なし）

It is better to place each ball in a 4x4x4 cube and place four balls on a straight line first.
* Since there is no gravity, you can place the ball anywhere anytime.
You can play in 3 modes: CPU vs Human, Human vs Human, CPU vs CPU.
The view can be freely rotated. It is also possible to add a sense of perspective.
The CPU tweetes one by one.
There are 4 levels of CPU: beginner, experienced, advanced and professional!
* The professional grade may be considered long.