G3D, the Glest 3D modelling format, is a binary format containing information on the 3D model. G3D, while simple, is a fully featured model format that stores meshes, texture links, animation, diffuse colors, etc. The animations in G3D are automatically smoothed out, making a simple 5 frame animation appear to be a fully framed animation. The animations are also stretched to one period of time, so a 5 frame animation is the same length as a 20 frame, but in the game, you can change the speed at which the animation is played.