Physics Lab

Game physics fundamentals, one interactive lesson at a time.
Each lesson has live labels in the 3D scene, sliders to tune values, and plain-English explanations.

01
Rigid Bodies & Static Bodies READY
Why things fall, bounce, and stop. The two most fundamental object types.
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02
Forces vs Impulses vs Velocity READY
Three ways to move a thing — push over time, instant kick, or set the speed directly.
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03
Mass & Inertia READY
Why heavy things resist movement and spin differently. Galileo's drop experiment included.
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04
Gravity
Global vs per-object gravity. What the 9.81 actually means.
05
Collision Shapes
The shape the engine uses ≠ the shape you see.
06
Friction & Restitution
Surface properties — how sticky and how bouncy.
07
Damping
Why things slow down even without friction.
08
Kinematic Bodies
Moving platforms and doors — you control them, physics reacts.
09
Sensors & Triggers
Detect overlap without physical collision.
10
Joints & Constraints
Hinges, welds, sliders — limit how objects can move relative to each other.
Reference docs/game-physics-overview.md — Written overview of all physics concepts. Good starting read.