Groups comparison

Recurrence - 1997 to 2021
Something from a previous game in a series appears again.

Recurrence: Character (Plot character;Plot creature;Plot monster) - 1997 to 2021
One or more characters from previous game(s) in a series appear again, regardless if they have the same status as they held before.

Recurrence: Location - 1999 to 2019
One or more (iconic or otherwise recognizable) location from a previous game(s) in a series appear again.

Recurrence: Creature - 2004 to 2008
One or more (iconic) creatures from a previous game(s) in a series appear again. Especially for cases when this is unexpected.