The iPhone's always been a great device for small flavorful bites of gameplay -- Canabalt's one-button jumping game probably set the course for this early on, but recently there's been a bevy of titles like these. Super Crate Box, Hookshot Escape, and Ziggurat have all offered up well-polished, simple, but endlessly deep bits of gameplay. And now here comes Spellsword, another great title in the same vein that cuts a specific genre (in this case, the action RPG) down to its core, and polis