| Mongol Conquest is for one player, and World Conquest is for up to four, who take turns as different rulers. | p. 5 (PDF p. 7) | Manual |
| A year has four turns, one per season; each turn the player gives three orders in the base country and one in each directly controlled country. | p. 5 (PDF p. 7) | Manual |
| Lords and princes have six abilities, Leadership, Judgment, Planning, Charm, Body, and Battle, each with a maximum of 999. | p. 10 (PDF p. 12) | Manual |
| Every person ages one year each spring, and anyone who reaches the end of his life span dies. | p. 40 (PDF p. 42) | Manual |
| A daughter 8 years or older can marry a prince, who then carries the family flag; princes with the family flag never rebel. | p. 7 (PDF p. 9) | Manual |
| If the lord dies in World Conquest, a son 10 years or older can succeed him; without one, the game ends. | p. 7 (PDF p. 9) | Manual |
| The merchants deal in 17 goods, from fur and silk to pikes and bombs. | p. 28 (PDF p. 30) | Manual |
| The Famicom manual says the base market rate changes every season and governs the merchants' trading rates, so a high base rate means high prices and a low one low prices. | p. 18 (PDF p. 20), main display, item 7 | Manual |
| The Famicom manual says each merchant has his own trading rate, merchants are not always present, trades follow the market rate of the moment, and the Sell and Buy screens show a table of rates. | p. 28 (PDF p. 30), 5. 商人 | Manual |
| In battle the attacker gives orders to all of his units, then the defender to all of his, and one day ends. | p. 5 (PDF p. 7) | Manual |
| Moving onto a battlefield square costs 3 mobility on plains, 4 in forest or a town, 5 in mountains or a castle, 6 in desert, and 8 on oceans and lakes; forest, mountains, desert, and water also cost soldiers on the march. | p. 46 (PDF p. 48) | Manual |
| The Famicom manual lists an Ordo (オルド) command, a night in the tent with the lord's empress, with four approaches that each need different abilities; the more often he goes, the likelier she bears a child, up to five children. | p. 24 (PDF p. 26), command listp. 32 (PDF p. 34), 7. オルドp. 40 (PDF p. 42), events, spring | Manual |
| The Famicom manual lists 15 commands, with Ordo seventh; the NES manual lists 14 and has no Ordo. | p. 24 (PDF p. 26), command list | Manual |
| The Famicom manual says an heir who takes the throne has no empress and no children. | p. 7 (PDF p. 9) | Manual |
| The Famicom manual says each country taken in war is a chance to bring a new empress into the lord's Ordo, though the country may have none. | p. 7 (PDF p. 9)p. 32 (PDF p. 34), 7. オルド | Manual |
| The Famicom manual says the rise in arms level from buying weapons depends on the whole population, not on the number of soldiers, and that bought weapons cannot be resold. | p. 28 (PDF p. 30), (2) かい | Manual |