If you're trying to make this game similar to the original space invaders, the peeps should not go down a row until one of them touches a side, instead fo going down after a fixed interval. that way if you destroy the leftmost or rightmost column you have more time
__________________
[COLOR=purple][COLOR=Magenta]SHAME ON A [COLOR=Pink]NIGGA WHO TRY TO RUN [/COLOR][URL="http://www.youtube.com/watch?v=NVGI6mhfJyA"]GAME[/URL] ON A NIGGA[/COLOR]
[/COLOR]