1)   Pick-a-Line 1
Select longest lines of identical balls, to be replaced by the incoming balls.

 2)   Pick-a-Word 1
Select longest valid words, to be replaced by the incoming letters.

 3)   Cross-Numbers 1
Arrange the numbered tiles in natural order, by moving the rows and columns.

 4)   Cross-Colors 1
Change the colors on a row or column, move them, and make the same color.