Sure, here's an example of a simple game where you have to navigate a tree rendered in three-dimensional JavaScript. The game assumes smartphone operation and uses basic pictograms.
This HTML file contains the necessary JavaScript code enclosed in script tags. The game allows you to navigate a tree by touching the screen on a smartphone. The tree is rendered in 3D using simple CSS styles to generate a 3D effect. The player's position within the tree is updated based on the touch input, and an alert is shown when the player reaches the top of the tree.