Game Development Reference
Making Your Own Sprite Frames
One of the easiest ways to create your own sprites, instead of drawing
each frame by hand, is to use a software package that will do it for you.
Adobe Flash has an export to image option that will allow you to create
single frames from an animation and save them as a sequence
of .png files.
Anime Studio Pro is a 2D animation software package that will take
an image of a character and allow you to add your own bones (see
Figure 3.6 ). You can then manipulate these bones to pose the character.
After an animation has been created, Anime Studio Pro provides export
features that will create a sequence of .jpg or .png files that can then
be used on sprites in Unity.
FIG 3.6 Anime Studio Pro.
On the Web
More sprites: http://www.touchofdeathforums.com/resources.php