[broken_clock]

Those are just frontends on top of Stable Diffusion. They won't provide what you need for a game - the results aren't animatable or rigable.

[vunderba]

Just going to comment this exact thing. You can achieve the same as any of these glorified SD wrappers with custom loras from civitai and controlnet, but animation which is crucial to any 2d based game (outside of a few genres like puzzle / card games) is non-existent.