In the ertert Procedure,add a line that calls NumbersGrabber
    Next i 

NumbersGrabber 'get more numbers
End Sub
Then change
If NextRowToUse = 1 Then MsgBox "GAME OVER! There are no more numbers."
to
If NextRowToUse = 1 Then Exit Sub
Oh yeah, you may need to add .Resize(, 7) to Range("I49")
InputSht.Range("I49").Resize(, 7).Insert shift:=xlShiftDown