A screenshot of a mountain with a river and trees

Create a classical, fantasy, sci-fi themed game poster for a voxel sandbox survival game called 'Ethertia · 以太效应' that mirrors the freedom of Minecraft with a smooth, realistic visual style. The poster should feature the edge of the world made up of fantastical particles, representing the 'ether', that reveal a secret world through an ancient theoretical effect. There should be a vast ocean with the viewpoint from an island. The island's cliffs should be larger at the top and narrower at the bottom, covered with dense, oversized trees and vines hanging down. The sky at the edge of the island should display a sci-fi etheric particle effect. The scene should evoke a sense of wonder and the possibility of exploration in this ethereal landscape.