Simplify the following text for a Grade 1 native English-speaking person.
Original: The first in the Mad Max franchise , Mad Max spawned sequels Mad Max 2 : The Road Warrior in 1981 and Mad Max Beyond Thunderdome in 1985 . The fourth film in the series , tentatively titled Mad Max 4 : Fury Road is in pre-production .
Simplified: Mad Max is a 1979 film .