Aliasing assassin's_creed_iv_black_flag → assassin's_creed
Link to alias
Reason:
Black Flag is a game in the AC series. I've only seen one post tagged with it, but it'll help for future uploads, much like how persona_2, persona_2_innocent_sin, persona_3, persona_4 and persona_5 are all aliased to just persona.
Other suggestions to alias to assassin's_creed
assassin's_creed_origins
assassin's_creed_syndicate
assassin's_creed_unity
assassin's_creed_3
assassin's_creed_iii
assassin's_creed_2
assassin's_creed_ii
Updated by Furrin Gok