Create an Image Sequence in Unity
Video description on how to create a very simple animated image sequence in Unity. The video is aimed at beginners or people unfamiliar with computer animation or Unity or anyone who'd like to try to make an image animation. The example use just a few images but you could use many more. The example also use images with transparent background, that is not necessary but more common. You can read more on how to make an image transparent either in Gimp or Blender on page "Bring your images into computer animation".
If you are unfamiliar with Unity, you can read more on Unity.com on how to create your own project. It is not difficult and it is free and you could do a lot of amazing things with Unity.