Creature is described as 'This software is used to create fluid and natural animation to 2D graphics, easily allowing the user to use secondary animation to make it look more natural' and is a game development tool in the development category. There are more than 10 alternatives to Creature for a variety of platforms, including Mac, Windows, Linux, Web-based and Chrome OS apps. The best Creature alternative is OpenToonz, which is both free and Open Source. Other great apps like Creature are Synfig Studio, enve, Expressive Animator and Spine.