C programming - just pure C on a command line. Native OS API calls were used exclusively, which has the additional benefit of creating a hyper-fast program. No Java / .NET / plugins / EXE packers or anything else contaminates the purity that is TinyTask. Careful choice of variable data storage size and resource (graphics) optimization for absolute minimum overhead. Balance of compiler optimization switches for compact code generation. Some interesting proprietary technical advances, that remain trade secrets. TL;DR Written with a fanatical obsession for zero code bloat.