Each point is one game's rating·dashed lines show each series' overall trend
Games on the chart (5)
| Nobunaga's Ambition | Dec 1, 1986 | Main Game | – | 69 | 69 |
 Nobunaga's Ambition: Iron Triangle | Jun 22, 2005 | Main Game | 73 | – | 73 |
 Nobunaga's Ambition: Rise to Power | Mar 5, 2008 | Main Game | 70 | – | 70 |
| Nobunaga's Ambition: Sphere of Influence | Dec 12, 2013 | Main Game | 80 | 80 | 80 |
| Nobunaga's Ambition: Sphere of Influence - Ascension | Mar 24, 2016 | Main Game | 72 | – | 72 |