Play Hyaku No Sekai No Monogatari - The Tales On A Watery Wilderness (japan) Online

Hyaku no Sekai no Monogatari - The Tales on a Watery Wilderness was a Japan-only release for the Nintendo Entertainment System, and I believe Kemco was the publisher. It's one of those late-era NES titles that tried to push the hardware with a more ambitious scope, arriving when many developers were already moving on to 16-bit consoles.

You control a young hero tasked with restoring a world that has been flooded, navigating the adventure screen by screen across a vast overworld and through multi-level dungeons. Your main goal is to find the scattered crystals that hold the power to push back the waters and reveal the lost continents. The game combines action-based combat, where you use a sword against various monsters, with light RPG elements like managing your health and magic. Exploration is key, as you search towns for clues and items to unlock new areas. The pacing can be deliberate, and the difficulty is notable, often requiring careful resource management and mapping of the labyrinthine dungeons. Playing it feels like a methodical, sometimes demanding journey through a quiet, submerged land.