Speaking if time-series, an underappreciated aspect of it is probably time commitment in multiplayer co-op games. Supreme Commander and Sins of a Solar Empire are in the 30+ minute category, Heroes of the Storm, Starcraft, Vermintide, Warframe, and Deep Rock Galactic are in the ~30min category, and Space Beast Terror Frighten and such are in the ~10min category.

Another time series distinction that afaict has received zero formal research.