Things to note:
We pull our data from two locations within Roll20 member profiles. Player numbers are drawn from the “Enjoys Playing” and “Seeks Group For” sections, while Game numbers come from the “My Campaigns” section. Our percentages can total more than 100%, particularly Player numbers, since each player will list their interest in multiple games. The report is meant to be a representative sample, and the game listings are curated by Roll20 staff.Which means you can take this all with a grain of salt. It may show trends, but the science isn't exact. I have nearly a dozen campaigns listed under "My Campaigns" section but I haven't run campaign in nearly a year. I guess I'm skewing the numbers ;)
The numbers for 5e means that over half the users of Roll20 have an interest in 5e. It doesn't mean over half are playing 5e.
Top 2 in the Market Report are the same, and 4 of the top 5 in the Market Report make the top 9 here. AGE didn't make the top 10.
WTF is Maid RPG? I'm picture bad sexual fantasy shit...
AD&D made the top 10 but the drop off is huge after the top 3.
Basic Fantasy RPG (BFRPG) has a huge showing for an OSR game. Even if you assume the numbers are inflated, it still blows every other clone out of the water. Maybe its active online community has something to do with it.