Phantasy Star Universe had this earnest sci-fi anime energy and the original score leans all the way into it. The orchestral version of Save This World opens with full strings and brass that sound like they belong in a Gundam finale, completely committed to the drama.
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Neudaiz brings in these lighter, nature-inspired textures with woodwind elements that contrast perfectly against the heavier S.E.E.D theme. For Brighter Day is the emotional anchor here, and the fact they included three versions of it (original, orchestra, remix) tells you how central that melody was to the whole game's identity.
With You goes quieter, almost ballad territory. If you were a PSU player who never grabbed this score separately, it holds up way better than you'd expect for a 2006 online RPG.