From the back of the book.
"The Supremacy challenge continues in the New World Order. The Threat is global and the struggle endless. Mega Supremacy combines the rules to the basic game and the first eleven expansion sets into one game system, and includes the following:
New Sources of Income
Now you'll receive tribute payments from the foreign territories you occupy. Use the extra cash to build more weapons.
Detailed Stages of Play
Each stage has been divided into phases, which will guide you when you are determining player sequence, drawing fortuna cards and using the special services of assassins, spies and saboteurs. Now you'll know who can do what and when.
Tables, Charts and War Planning Map
The appendix contains tables and charts for quick and easy reference when you are building weapons or waging war. Now you'll have the cost of your ambitions at your finger tips. Use the map to carefully plan your battles in distant zones.
This rule allows a team of players to lead a superpower to victory by appointing each player to a specific role, such as Commander-in-Chief, Secretary of State or Secretary of Defense. Use your collective skills to negotiate treaties with allies and to plot the battles to destroy your foes."