Plain control is the main focus here. i find that keeping a small ball away from the border is the core task.
Click or tap to move the ball, you must avoid the border.
The control is a single tap or click. The main feature is that the ball cannot touch the border.
Most players should make small movements to avoid the border. Slow and steady is better than fast.
Q: What are the controls? A: A single tap or click.
Q: What is the objective? A: Avoid the border while moving.
Q: What is a stated feature? A: The ball cannot touch the border.
Q: What is the main mechanic? A: Keeping the ball away from the edge.
