Sure! Here's a simple 2D pixel survival game set in a water world. The game will be playable on a smartphone and uses pictograms for a visual representation.
This is a basic implementation of the game using HTML, CSS, and JavaScript. The game involves a player represented by a colored square navigating through a water world background. The player can be controlled using touch events on a smartphone, with the left half of the canvas for left/right movement and the top half for up/down movement. The player moves smoothly and can explore the water world.
Please note that this is a simplified game and can be expanded upon to include enemies, collectibles, or additional gameplay mechanics based on your requirements.