Each point is one game's rating·dashed lines show each series' overall trend
Games on the chart (6)
 Killzone | Nov 2, 2004 | Main Game | 70 | 74 | 72 |
 Killzone: Liberation | Oct 31, 2006 | Main Game | 80 | 69 | 75 |
| Killzone 2 | Feb 25, 2009 | Main Game | 90 | 78 | 84 |
| Killzone 3 | Feb 22, 2011 | Main Game | 84 | 77 | 81 |
 Killzone: Mercenary | Sep 4, 2013 | Main Game | 75 | 76 | 76 |
| Killzone: Shadow Fall | Nov 15, 2013 | Main Game | 65 | 70 | 67 |