Not sure who this might be useful for, but it seems like Qwen Image 2.1, for all its faults, is a pretty competent transformation model for game screenshots. Outputs, particularly at lower CFG, are largely faithful to the input image. Higher CFGs make more changes, although to my eye most outputs tend to be pretty recognizable as the subject, and importantly multiple images of the same subject are nicely consistent across different images, so it's not just making up faces on the fly every single time. There will still be weirdness, naturally, but it's nothing that a couple of re-rolls typically can't fix.
I think there's some real applicability here for using something like the Sims--which is very easy to work with--as the basis for something like a visual novel or webseries.
Sims 4 screenshot "upscaling" with Qwen Image 2.1
Prompt: Convert style to: high-end photorealistic 3D render with production-quality CGI finish, lit with a high-dynamic-range studio HDRI (soft key, cool fill, warm rim accent). Physically Based Rendering pipeline with full PBR material stack: layered micro-displacement on the surface, high-frequency normal detail, anisotropic specular with per-channel roughness variation (glossy-to-satin gradient across curved surfaces). Subsurface scattering enabled with a short mean-free-path for realistic light diffusion and inner glow on thin/translucent regions. Ray-traced global illumination, caustics, and soft penumbra shadows with accurate light wrap. ACES filmic tone mapping, 8K output at 4096 samples (AI-denoised), shallow depth of field with natural bokeh falloff, 85 mm virtual lens. Octane Render / Arnold-quality material response, zero tiling seams, UV-mapped albedo with organic tonal variation. Clean neutral seamless backdrop, product-photography composition.