After doing research between the four various titles - NieR, NieR: Replicant, NieR: Gestalt, NieR Replicant ver.1.22 - as well as additional information provided by Vemonus, nier-replicant-1.22474487139 needs to be a separate tag to differentiate it from the standard nier
The 1.22474487139 version of Replicant contains exclusive content including a new story segment as well as a fifth ending
I believe it's safe to keep the base tag nier, and create the following synonyms:
My researched concluded there are not enough (if any all) functionality or mechanical differences to warrant having separate tags for the various versions.
In Japan, NieR:Replicant and NieR:Gestalt were the same game with different titles for PS3 and X360 respectively. The only major difference was the main character's age and role to a secondary character. There were some minor differences as well, but nothing to suggest separating these tags.
Outside of Japan, the version titled NieR was simply the NieR:Gestalt version.
The globalized version of NieR:Replicant ver1.22474487139 is an HD Remaster of the Japan only version of NieR:Replicant, and my researched conducted only graphics and framerate are the only major differences.
-1.22474487139
remove any ambiguity between the original and remaster. However since there are no questions tagged tonier-replicant
, I'd be ok with shortening it