Some interesting quotes:
"We want to also support Xbox 360, but it requires extra license fees for Unity and development hardware to test on. Also, indie developers are unable to self-publish their games on the Xbox 360. Therefore, a third-party publisher is required to release it. We can only support the Xbox 360 if we reach the stretch goal. If we reach the stretch goal, backers will be able to choose from any of the available platforms."
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"Cult County has grown beyond the scope of the 3DS, and we do not want to compromise our vision for the game. We are excited by the opportunity home consoles and computers offer the game, and hope you share our enthusiasm. We have chosen to utilize the Unity engine to craft the experience, which unfortunately does not support the 3DS (yet?).
If there is enough interest in seeing Cult County on the 3DS, a "Nintendo 3DS" stretch goal could be added. However, it would need to cover the cost of developing a separate game entirely, as we would need to rebuilt the game from scratch with our proprietary 3DS engine."
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I understand that people might be disappointed it's not on the 3DS but I don't see how you can blame them. Seems like it was either a 3DS version or an EVERYTHING ELSE version.
Anyway, $15 for a digital copy seems pretty nifty.
Essay Pro