Final Fantasy Adventure is a top-down action RPG whose gameplay I'd describe as a cross between Zelda and Final Fantasy, since it has the dungeons, items with different abilities and simple puzzles of the former but the magic system, progression and story focus of the latter.

In general, I'd say it's a very fun game that's dragged down by some classic "old game features", like its cryptic systems, small inventories, crappy hitboxes and overly long dungeons. I still recommend giving it a try though.