Sure! Here's an example of a simple game where you can build your own Earth and simulate its livability using JavaScript and pictograms. It's enclosed in `` tags within a single HTML file:
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<h1>Planet Maker Game</h1>
<canvas id="canvas" width="400" height="400"></canvas>
In this game, you can use the arrow keys on your smartphone to increase or decrease the levels of water and land on your planet. The visual representation of each parameter is displayed using colored rectangles. The goal is to adjust the parameters to make your planet livable, which is determined by certain thresholds for each parameter.
Feel free to modify and enhance this game according to your preference and add more features if desired.