“Oceanheart is a chill exploration game about sailing away and making a home.” That’s how co-designer Karen Teixeira describes the fledgling new project on her website. Teixeira began development on the game in late April of this year. Since then, she’s slowly been revealing new details and video samples on the game’s Tumblr. The premise is straight-forward enough: an open-world adventure game where players sail around exploring different islands and discovering underwater secrets. But beyond the minimalist trappings of an Animal Crossing at sea—including fishing, cooking, crafting and some amount of boat-as-house interior decorating—the game’s real charm lies in the…