Seriously, give it a try. It's alpha (partial and missing features), buggy, and it still performs poorly (in terms of fps).
Having said that, and looking past those issues (which isn't easy, and may not be for everyone), you'll see potential.
Whether it'll be realized (fully or partially) i don't know. But i've had great moments.
disclaimer: backed a basic (40 dollars, i think) package back in 2012.