I loved thrashing my poor computer running this in WASM. I was surprised how accurate the cheese physics were, like it seemed like gyroscopic motion was pretty spot on. Also "cheese physics" is not a phrase I think has been uttered before, except maybe within modded Skyrim.
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The "cheese physics" (lol) are all bevy_xpbd. The character controller is pretty rudimentary, it just adds a small force and roll-axis torque whenever the player holds left/right. So in the air you get a little motion and while rolling you "tilt" over. It's not the best but it seems to behave well enough.
Thanks for playing, and a hearty thank-you as well to your computer. I hope you had fun!