Each point is one game's rating·dashed lines show each series' overall trend
Games on the chart (3)
| Sid Meier's Covert Action | Jun 3, 1990 | Main Game | – | 70 | 70 |
| Sid Meier's Alpha Centauri | Feb 9, 1999 | Main Game | 91 | 92 | 92 |
| Sid Meier's Antietam! | Dec 13, 1999 | Main Game | 70 | – | 70 |