This RPG is published in French.
Mega - 5e Paradigme is the fifth version of Mega, a French RPG first published in 1984 as a special issue of Jeux & Stratégie
(Translated) From the publisher website:
Mega - 5e Paradigme lead to exciting adventures in various universe and uchronies, from the most ancient to the most technological, following your own interest and wished. The ideal game to dive into original worlds, travel through time and share unique gaming experiences without your friends and children.
This is the core rulebook, it contains the rules, the background and 7 adventures