5.1.
I want to change the way this game looks. Can I?
Yes. To change KBounce visual theme you can use Settings → Configure KBounce... option on the menubar.
5.2.
I have made a mistake. Can I undo?
KBounce does not have an “Undo” feature.
5.3.
Can I use the keyboard to play this game?
No. KBounce cannot be played using keyboard.
5.4.
I have to quit the game now, but I am not finished yet. Can I save my progress?
KBounce does not have a “Save” feature at the moment.