In the last version of BGG1tool (1.19.3) I've added a feature for creating a chart with dates and numbers of played games (globally).
For example, I insert the ID of Gloomhaven (174430) in the left box, enable the checkboxes "Download plays" and "Down. plays (all)", and click "Load games".
It may took some time for the oldest games (there is a counter in the right bottom part of the windows). At the end I click on "Data charts" button and select "Playing dates" option, this is the result:
If you want to limit the date range, use the button "Date range (plays)" before starting.
Games, software and BGG...
- [+] Dice rolls