"Anyway, in 63,420 bytes it's got 2 maps (w/ entities), about 100 textures/icons, 27 models, an OpenGL renderer (with VBO suballocation), Bezier patches, a brush partition, a multithreaded lightmapper, raw mouse input, player physics (w/ corner clipping) and a basic menu system." Мне кажется текстуры генеренные они выглядят на 256х256 минимум, под них места бы не было.