Why the fuck did I stop playing games? I'd rather make games though, so much shit to learn from (e.g. reverse-engineering/decompiling, engines, rendering, precise collision detection and physics (3D, irregular shapes, curves), memory and performance optimization, GUI editors and user input, verbose mathematical expressions, interpreters, save states, file formats, emulators, audio processing (reverb, filters), procedural generation, multiplayer networking, etc.).