Hey, we’re developing a gyroscope-based isometric game, and I noticed a ghost force effect when the cat character collides with walls. Gravity is strictly pointing downward.

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To investigate, I recreated the scenario in a TypeScript test bench and found that the ghost force could be caused by a combination of self-spin and friction.

Screen.Recording.2025-10-07.at.18.44.38.mov

As shown in the videos, the same behavior occurs in the previous isometric scene: after a collision, the ball is pulled to the left by a ‘ghost force,’ then immediately shifts to the right.

FYI, gravity dir is pointing to right-bottom corner, after we switching from isometric view to 2D view.

Question:
Is it possible to simulate a perfectly smooth surface to completely remove friction, so that the cat can fall naturally without this unwanted force? Is there any material setting? Or should I use Joint?

THANKS!