Real-Time Physics Simulations
Build physics simulations you
actually understand.
Cloth, rigid bodies, and fluids — explained from first principles and written out in code, one clear step at a time.
My Latest Book
Fluid Simulations Made Easy
A Practical Guide for Developers: Implement SPH, PCISPH, IISPH, DFSPH & PBF Without the Headache.
A learning platform for
physics simulations
A tech tree that takes you from knowing almost nothing to building cloth, rigid body, and fluid simulations. Each node is a recommended step on the path — from foundational math to advanced solvers.
Latest Updates
pixelphysics.io is live! The skill tree and learning platform are officially in the works.
Fluid Simulations Made Easy is now available on Amazon.
About
Marcel Kießlich
I've been obsessed with making things move on screen since forever. That obsession turned into a Master's degree in Game & Simulation Engineering at the University of Applied Sciences in Salzburg, Austria — where I got to spend both theses doing what I love: real-time physics. One was on Position Based Fluids, the other on rendering smoke in real-time VR.
By day I work as an Android & Next.js frontend developer. In my spare time I run a YouTube channel breaking down fluid simulation algorithms step by step. I also write books to make this world of math-heavy topics accessible to everyone willing to step into simulations.
I'm always exploring new ground in physics simulation — cloth, rigid bodies, fluids — and turning what I learn into content that actually explains it well and is easy to follow along.
// computer graphics & game physics enthusiast · author · android & next.js developer