Untitled
// prototype in a grey box, where every good idea starts
Modern games. Legendary math.
An independent studio making story-driven games with modern technology — named for the bit hack that taught computers to normalize a vector without paying for a square root.
the name
Thirteen lines that
changed 3D games.
Lighting a 3D scene means normalizing millions of vectors a second, and normalizing means dividing by a square root — historically one of the most expensive things you could ask a CPU to do.
The fast inverse square root sidesteps it entirely. Reinterpret the float’s bits as an integer, subtract from a magic constant, shift, and you land within about one percent of the answer. One round of Newton’s method cleans up the rest.
It shipped inside Quake III Arena with a comment nobody has ever improved on, and the whole industry got faster. That is the kind of engineering we like: unreasonably clever, brutally practical, and in service of the thing actually being fun.
float Q_rsqrt( float number ){ long i; float x2, y; const float threehalfs = 1.5F; x2 = number * 0.5F; y = number; i = * ( long * ) &y; // evil floating point bit level hacking i = 0x5f3759df - ( i >> 1 ); // what the [expletive]? y = * ( float * ) &i; y = y * ( threehalfs - ( x2 * y * y ) ); return y;}studio
How we work.
Story first
Mechanics are how a game works. Story is why anyone stays. We start with something worth saying and build the systems that serve it.
Modern tooling
Current engines, real pipelines, continuous builds. Tagging a release ships a build — no heroics, no crunch-week integration hell.
Fun is the spec
If it isn't fun in a grey-box prototype, no amount of art will save it. We prove the loop before we polish it.