LOTR is high fantasy tho.
That's what we call it now, sure. But it was also Tolkien's reflection on certain personal experiences (WW1), personal interests / science (culture, folklore, history, myths and language) and commentary on certain social developments that bothered/interested him during his era (industrialisation vs nostalgia regarding his home turf, the meaning of 'power', greed, etc). I look at the MGS series in that context, not if it fits the 'Is a realistic militairy uber-Rambo simulator with fun gameplay' framework. Im exaggerating a bit but I hope you get my point