We have been building Comfy internally at LogLog Games almost a year now. As such, we have a few games that are using it.
The two bigger examples are
We also have a small unconventional example of using comfy to do 2D CPU based raytracing https://logloggames.itch.io/bitmob-1-bit-jam, which will be opensourced soon. It's a relatively small game, but hopefully will serve as a nice illustration of non-conventional ways to make games. Specifically, the whole game is a single texture where every pixel is copied over from other textures, and lighting calculated using simple raytracing.