These categories are all tags anyway, trying to build a distinctive taxonomy of games is futile. Most sensible philosphers have long since abandoned categorical

These categories are all tags anyway, trying to build a distinctive taxonomy of games is futile. Most sensible philosphers have long since abandoned categorical absolutism and there are many hundreds of years of arguments around it. Call them tags and the generality of the tag becomes irrelevant. If enough people like some combination or derivation of rogue elements then roguelike is good enough. The issue with non specific tags (roguelike vs permadeath) is that the membership defines it, leading to either infinite dilution or periodic membership - think the evolution of political parties.