https://play.google.com/store/apps/details?id=com.innovativegames.knockdown Knock Down is a game of knock and down all the boxes standing on some floating platforms with Slingshot and Angry Balls.
To help in aiming there is trajectory line which will pop out when you target the boxes.
This is a level game. There are 36 unique and interesting levels.
You need good logical and aiming skills to complete any level.
As you move to higher levels you will find more in completing.
You can also say this, a physics game because all things are controlled by physics.
You can also zoom in, zoom out and move the game scene in each level in all directions to see close look.