Algodoo

Protect the white line! Try to knock the soaring blue ball out of the sky with your godly power of flicking with the shape move tool. Challenge yourself with 5 different modes which are sizes of squares. Green = Easy(You basically can't miss) Yellow = Medium(A bit harder) Orange = Hard(Adding some challenge over here) Pink = Harder(Have fun with this size) Red = Extremely Hard(420BLAZE IT OMG GET SNIPED BOI).
Tutorial:
1. Pause the simulation when the ball is in the air
2. Delete pin circles on mode/size you want
3. Select the shape mover, then click and hold the square
4. Unpause the simulation then flick your sqaure at the blue ball before it goes past the white line(don't flick too hard or else it won't register)
5. Try all the different modes to challenge yourself and have fun(if you can)