Attack of the Tomato

A strange shooter in which you have to kill alien tomatoes, the tomatoes themselves cannot kill you, instead you have to prevent them from crossing over to the other side by shooting them until they explode (after they turn black, you have to shoot them one more time to kill them). When you let six tomatoes pass across the left side (and eventually off the screen) of the screen, it's game over.

This was a type in from the book "Winning Games on the Commodore 64"

The German version was from the book "Das große Commodore-64-Spiele-Buch"

There is also an updated German version simply titled Tomato in 1986.