Each point is one game's rating·dashed lines show each series' overall trend
Games on the chart (8)
 Peggle Extreme | Sep 11, 2007 | Main Game | – | 63 | 63 |
| Portal | Oct 10, 2007 | Main Game | 80 | 86 | 83 |
| Portal 2 | Apr 18, 2011 | Main Game | 92 | 91 | 92 |
 Poker Night 2 | Apr 24, 2013 | Main Game | 65 | 76 | 70 |
 LEGO Dimensions | Sep 27, 2015 | Main Game | 77 | 74 | 75 |
 The Lab | Apr 5, 2016 | Main Game | – | 80 | 80 |
 Bridge Constructor Portal | Dec 20, 2017 | Main Game | 78 | 72 | 75 |
| Aperture Desk Job | Mar 1, 2022 | Main Game | – | 76 | 76 |