BUR #50151 has been approved by @evazion.
create implication clock_tower_the_first_fear -> clock_tower_(series)
create implication clock_tower_2 -> clock_tower_(series)
create implication clock_tower_ghost_head -> clock_tower_(series)
create implication clock_tower_3 -> clock_tower_(series)
These are all parts of the Clock Tower series.
https://en.wikipedia.org/wiki/Clock_Tower_(1995_video_game)
https://en.wikipedia.org/wiki/Clock_Tower_(1996_video_game)
https://en.wikipedia.org/wiki/Clock_Tower_II:_The_Struggle_Within
https://en.wikipedia.org/wiki/Clock_Tower_3