High fantasy is usually the standard fantasy races and monsters and accompanied by all kinds of accessible magic and weapons.   Low fantasy is more limited, usually just humans or a handful of fantastic races, and magic is either restricted or almost non-existent forcing characters to rely on basic weapons.<br/><br/>Hard sci-fi vs soft sci-fi is kinda similar in that hard sci-fi is like a low fantasy sci-fi universe.  They tend to be grittier with fewer alien races and advancement is very realistic.  Soft sci-fi is more fantastic and might have tons of aliens and magic-like technology.  If I had to guess, this world would kind of be a soft sci-fi or high fantasy universe, or a blend of the two.