There are a few small issues tied to the mobile version (some weird text spacing, the Stairway to Zenithia not stretching to the end of the screen when you're inside it, stuff like that) but it's the only official English version DQIV to have party chat, which really helps take the party from basic JRPG roles to charming characters that stand alongside some of the best ones from later DQ games. I also never played through chapter 6 when I first played IV, so that was neat. This game's fungeon was way better than V's but it really sucked that the new party member basically only joins you for the final boss and the repeat Foo Yung/Chow Mein fights.