Pac-Man Collector Cards

Pac-Man and ms.Pac-Man Stickers and Rub-Off Games by Fleer from 1980-1981. Won a bunch of these from a Finnish auction site. No idea how they ended up in Finland though. 

There's some interesting ' humor' in them, as you can see:

Also, why are Pac-Man and the ghosts exactly chasing after each other?
Wink wink, nudge nudge, eh?

There's some special ones too:

The Rub-Off Games look like this. In 25 years the scratch-off surfaces have gotten so tough, that they can't be scratched off anymore.

And there's a few variations:

2 3 4 5

And the rules.

See all the cards here.