LogFAQs > #975087221

they're pretty much the same as LA (besides the rings and the animal buddy system, and the gimmicks for Seasons/Ages), just more of it and not quite as good/fresh. I think conceptually Seasons is intended to be a bit more "combat" focused and Ages a bit more "puzzle" focused but it's not a super huge difference in difficulty or complexity between the two or LA. Well, there's one super obnoxious minigame in Ages if you have a bad sense of rhythm/timing but I don't remember offhand if you have to do it to complete the game or if you just had to do it for a piece of heart..