>>2490482These games all use the same basic pool of upgrades, you just get to choose which appear in each level, for how long, etc. The basic program is oniB2editor/鬼壁"
http://onikabe.x.fc2.com/ Panic is randomized bounce on the slider.
Gravity is the worst one making the ball act as a real ball with ballistic trajectories. So bad most of the games don't include this "upgrade", it's only for those that love challenges.
