Before I say anything let me get this out of the way. The Indivisible is an example of how all of these fundraisers should be done, with a clear set of goals and a working prototype and not through pretty pictures and empty words as they usually tend to be.
That said, Indivisible has reached its funding goal of $1,500,000 (currently its sitting on $1,609,309) and the last 55 hours of its Indiegogo campaign are going to be all about securing the stretch goals, the most important of which is at $1.65 million mark and boasts an additional hour of extra music.
I think its the art-style that interests me the most. Its very reminiscent of the one used in Skullgirls, which should come as no surprise to anyone. Lots of nice contrast between the characters and the backgrounds which looks just great in motion. Though if the trailer video for the indiegogo campaign is any judge I could definitely do without the character going "huah, hah, AHA" with every step and swing she takes. As far as the actual gameplay goes you can give it a try yourself, the download links are found here.
On the question of whether I've backed it myself or not my answer is a no, and not because I hate the game, rather because I feel I might like it. You see, I've set myself a personal rule to not get invested in early access or fundraiser games because you never know how they're going to turn out, or if they're going to turn out at all. I've gotten burned plenty of times before but and with my crowning achievement of pre-ordering Spore I've realized that I'm more than happy to just wait for the game to release and then grab it if it still interests me.
Speaking of releases, the launch platforms for Indivisible are going to be Windows, Linux, Mac and the PS4 though they specifically stated US and EU PS4 so whether it will be available in the other continents I don't know.
So should you support it or not? While I can't give you an answer to that I can tell you that given the working prototype and the amount of detail they've put in to their pitch the game is almost certainly going to release, the only question remains is how good the final product will be. At least with the estimated release date being January 2018 you know it won't be rushed out of the door.
But no matter your choice I'd recommend playing the prototype first in order to get a feel for the game before making any decisions.