BUR #5824 has been approved by @Hillside_Moose.
create implication metroid_(classic) -> metroid
create implication metroid_2:_return_of_samus -> metroid
create implication super_metroid -> metroid
create implication metroid_fusion -> metroid
create implication metroid_prime -> metroid
create implication metroid_prime_2:_echoes -> metroid
create implication metroid:_zero_mission -> metroid
create implication metroid_prime_hunters -> metroid
create implication metroid_prime_3:_corruption -> metroid
create implication metroid:_other_m -> metroid
create implication metroid:_samus_returns -> metroid
We just added an implication for metroid_dread, but it turns out none of the other games were implicating the series as a whole either.