You can use any square shape.
Make sure the vertical text lines aren't touching the square and higher up than the square so when the squares bottom touches anything, the lines don't bump the shapes below them.
Also make the lines the background color and send them to the back to hide them.
Only the red shape can be tapped. You can copy the code for the red shape and apply it to all shapes.
I think a good idea is to have all the shapes moving up towards the screens top edge.
More stress can be added to the game by making the game end if any shapes bump the top of the screen, so all shapes have to be tapped to prevent them bumping the top screen edge.
Notice when the red shape is tapped and made invisible, the square moves left if the last touch X is less than the squares position, and the square moves right if the last touch X is greater than the squares X when a the red shape is tapped.
You can choose as many shapes as you want and there positions/angles.
You should have the shapes move by using set position + a value to move up .