The king no longer has extra life expectancy. In preparation for the time to come, the two next king candidates were trying to gather support from various forces in various places. But do not disturb yourself. No matter how many voices you put on your side, you just bow down to the person who carries the Holy Grail ... ... "Holy Grail Succession" is a card game for two people with the theme of medieval throne succession fighting. The player becomes one of the influential throne successors, and will aim at the throne. Those who gained the support of many forces are approved by the princes and become the next king.