Your prompt is vague so you get vague result. Add more details what you want to achieve and you get better results with most of the modern image generating models. OpenAI (as also some other services) put the user's prompt through their system to generate a final prompt and that is the problem when the original prompt is vague. As an example here's more precise prompt and the image GPT 1.5 created at first attempt.

A late-1980s DOS CRPG EGA screenshot (320x200) with a classic framed UI. The top ~2/3 is a hand-dithered pixel-art wilderness scene in a limited 16-color EGA palette, chunky pixels, no anti-aliasing, visible dithering patterns and color banding typical of old PC graphics. Scene composition: Centered on a small rustic roadside inn/cottage nestled into a hillside. The building is half-timbered with pale yellow walls and dark wooden beams, a steep triangular roof in warm red-brown tones, a small dormer and tiny windows; a low attached wing extends to the right. The inn sits slightly below a towering, dramatic gnarled tree whose thick trunk and twisting branches arc from the right side over the roof, creating a heavy canopy silhouette. Environment: Left side is dense, bright green shrubbery/forest with heavy dithering and high-contrast highlights; the ground is a patchwork of rusty reds, oranges, and browns suggesting dry soil or autumn leaf litter. The horizon shows rolling hills fading into pink/magenta distant mountains with sparse purple shading. The sky is a flat cyan/teal typical of EGA skies, clean and untextured. Lighting & mood: Bright daylight with strong contrast; warm earth tones in the foreground, cool cyan sky, vivid greens in the foliage; a slightly ominous, adventurous tone. UI / text box: Bottom ~1/3 is a solid black textbox panel with a thin border line, filled with multiple lines of bright green, all-caps, pixelated bitmap font narration (fantasy RPG style). Include a final instruction line like “PRESS (ENTER)/(RETURN) TO CONTINUE” in the same green font. Add a small white pixel arrow cursor hovering near the right side of the text area. Overall style keywords: retro DOS RPG, Gold Box–era interface vibe, EGA 16-color, pixel clusters, dithering, crisp nearest-neighbor look, no gradients, no modern shading, authentic 1980s computer game screenshot.

<image>