Mario

"Mario" is one of the most popular games on the world.

It also was also the most famous video game character along with the most famous female video game character "Lara Croft" on the Guinness book of records 2002 (i think that's the right year)

Mario that character created by nintendo has filled the times of millions of children of different ages i found this image on the web a couple of weeks ago.. :)

well let's just say it gave the game a new dimension which might make it unsuitable for children :D

BTW open source windows XP Games link here
which includes a couple of mario games