Each point is one game's rating·dashed lines show each series' overall trend
Games on the chart (5)
| Let's Sing | Feb 13, 2014 | Main Game | 70 | 50 | 60 |
 Let's Sing 2016 | Oct 23, 2015 | Main Game | – | 50 | 50 |
| Let's Sing Queen | Oct 2, 2020 | Main Game | 86 | – | 86 |
| Let's Sing 2022 | Nov 22, 2021 | Main Game | 70 | – | 70 |
 Let's Sing 2024 | Nov 7, 2023 | Main Game | 72 | – | 72 |