I recently learned of the Defold Engine and it is a viable choice for making an indie game that uses 2D skeletal rigs.
Seeing as how Defold will import a "Spine JSON Data File" which basically is the skeletal rig with animations and mappings to assign images to, surely Spriter could mimic the formatting with relative ease, right?
I'm sure Spriter would benefit far more indie devs with this export capability, especially since Defold is a very attractive 100% free game engine
Conner Wood got a reaction from splashshadow in Feature (please) request - export to spine3.3 format