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It currently only outputs .mp4 and .gif files. You could probably use these as game assets, but I don't think it would be optimal.

The rendering code utilizes an MVC framework. If you need the animation output in a .obj format or something, it's as simple as creating a new View that supports it. Feel free to request this in a Github issue if you want me to prioritize it.

I’ve been working on a project exactly for this: https://dreamlab.gg/.

Currently it only allows for animating a character generated from a prompt. However, we’re working to use null text inversion [0] combined with inverse DDIM (used for pix2pix) to allow animating a pre-drawn character.

[0]: https://arxiv.org/abs/2211.09794

You could look at Adobe Character Animator.