Unreal Engine 1 to Emscripten.

Computational Balloon Twisting: The Theory of Balloon Polyhedra (PDF, 2008), by Erik D. Demaine, Martin L. Demaine, and Vi Hart.

SeqBox, a single file container/archive that can be reconstructed even after total loss of file system structures.

Tensorial logic is a primitive logic of tensor and negation, whose purpose is to circumscribe the basic ingredients of reasoning, and to study them using the tools of contemporary algebra.

A Primer on Bézier Curves, a free, online book for when you really need to know how to do Bézier things.

Breakthrough is an abstract strategy board game invented by Dan Troyka in 2000.

Vernon Rylands Parton was an English chess enthusiast and prolific chess variant inventor.

Minecraft in real life, “ANICUBE”.