Coding Custom Game Physics from Scratch with C# and Unity

Learn to translate classical mechanics into clean C# code and build your own custom rigid body physics system in Unity.

4.6 (1,213) ⏱ 1h 44m 📚 10 lessons 🎧 Audio version

About this course

Ever wondered how game engines actually calculate gravity, velocity, and motion behind the scenes? Understanding the core mathematics and physics of rigid bodies is the key to creating truly custom, controlled movement in your games. This text-based course guides you through the process of writing your own physics engine from scratch. You will move past relying solely on built-in black-box tools, learning how to translate classical mechanics and Newton's laws of motion directly into clean, performant C# code inside Unity. What you'll learn: - Understand the fundamental physics concepts of mass, force, velocity, and acceleration. - Apply Newton's Laws of Motion to program realistic movement algorithms. - Build custom rigid body and force accumulator components using C#. - Implement a stable fixed-timestep simulation loop for reliable physics calculations. - Solve vector mathematics problems essential for 3D game physics. - Structure your custom physics code using clean, modern C# programming standards. You will start with foundational definitions, basic terminology, and essential vector mathematics before gradually assembling your own physics components step-by-step through clear written explanations and detailed code snippets. This course is designed for beginners interested in game mathematics and physics programming, with no advanced prerequisites required to get started. Start reading today and unlock a deeper understanding of game physics programming.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 30-day refund
    No questions asked
  • Short & focused
    1h 44m of practical content

Reviews (5)

Sebastián Rodríguez MX Verified learner
★ 4 · 2026-04-07T07:12:53+00:00

Good material overall. Some parts moved a bit fast for me, but the core concepts were explained well. Useful for building a foundation.

ธานินทร์ วิริยะ TH
★ 4 · 2026-02-06T19:43:53+00:00

Good foundation built here. Some of the explanations could have been clearer, and the pace was a bit inconsistent, but overall a valuable learning experience.

مروى بن طارق TN Verified learner
★ 3 · 2025-10-23T00:39:53+00:00

It was a decent course overall. Some parts moved a bit fast for me, but the core concepts were explained well. Good for a foundational understanding.

임하윤 KR
★ 5 · 2025-09-10T19:11:53+00:00

Fantastic learning experience. The pace was perfect, and the examples really solidified the concepts. Big thumbs up!

علي العتيبي KW
★ 3 · 2025-06-05T02:42:53+00:00

It's a good course if you have some prior knowledge. For absolute beginners, some concepts might be a bit challenging. The structure is logical, though.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe, or with cryptocurrency. We do not store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 30 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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