One person names a character and the other(s) has/have to name a character commonly shipped with them. The game flows from there.

Ex:
Canada
France
Britain
America
Japan
Greece
Turkey

If you run into a dead end you lose/take a drink.
Tada

I could make thousands of these....

America
Canada
Prussia
Germany
Italy
Romano
Spain
France
Britain
America

Whether or not characters can be repeated is up to you but the same ship can't be brought up twice.