Pixel art for a dark 2D side-scrolling action game set in...

Pixel art for a dark 2D side-scrolling action game set in China's Three Kingdoms era, around 200 AD. Muted low-saturation palette of dark blues, slate greys and earth browns with very small dull red accents. Large crisp pixels, flat shading, no characters, no people, no text, no UI. A long strip of scenery seen straight from the side, occupying only the bottom third of the image and running from the left edge to the right edge at an even height: a low rough rock face with roots, shrubs, ferns and small boulders at its foot. The bottom of the strip is a straight line of earth. The background is one plain solid magenta colour (#ff00ff) with nothing else in it, for chroma keying.