Just finished and hmmmmmm. Didn't give me the Dexter wow. Can't really find the right words to describe it but empty & ungrounded spring to mind. We didn't get to see them blast off, don't know where they came from, didn't hear much (if anything) about the planet they're heading towards. Since it's set in a spaceship that they can't leave, it should have an intense claustrophobic feel about it, but to me it felt completely the opposite, nothingness. <- finding me words isn't going so well.
The ending seemed to suggest this
is a Matrix within a Matrix type thing and they're really back on Earth and taking part in a (very) elaborate reality show.. But
going by the success or rather non-success of reality shows this might not be such a good thing.
If it comes back I'll give it a couple more eps though, just in case this was a Heros ep1 type of thing - ep1

but ep2