Every figure below is computed from the 1,853 records in this database, not from estimates. They will change as coverage grows.
The 2015–2016 peak is the die-off of the Mobage and GREE card-battler era. Coverage of 2026 is partial — the year is not over.
Computed only for the 231 records where both a launch and an end date are known.
Operator names are recorded as the sources give them; corporate renames are not yet consolidated.
Most operators never state a reason. We record that as undisclosed rather than inferring one, which is why the number is large and honest.