Mashinky engine is able to load well known formats like: * [https://en.wikipedia.org/wiki/BMP_file_format *.bmp]* [https://en.wikipedia.org/wiki/JPEG *.jpg]* [https://en.wikipedia.org/wiki/Portable_Network_Graphics *.png]* [https://en.wikipedia.org/wiki/TIFF *.tiff]* ... but the native one to the engine and best to use is [https://en.wikipedia.org/wiki/DirectDraw_Surface *.dds]format of textures. DDS stands for DirectDraw Surface, what is native format for DirectX, an industry standard. Vanilla textures curently use DXT3 filtering. The size of textures is of power of two (2^n), so in the line of 128^2, 256^2, 512^2, 1024^2, 2048^2...