Despite the bad reviews, I just had to see this film after I learned it had a $13,000 budget.
It wasn't great, but then again, it was better than a LOT of big budged Hollywood movies I've seen this year. In terms of entertaining me, it did slightly better even than Indiana Jones and the Crystal Skull, and even better than the most recent Narnia Installment, Prince Caspian.
It had major problems, some acting errors, disjointed plot. But the special effects weren't bad for an indie sci-fi, and was a creative premise (much like Pitch Black).
Again, not great - but I would much rather small films like this get attention, and the directing/writing skills of new indie artists get developed, than continue to see the same old hundred-million-dollor formula films get recycled by Hollywood year after year.
I give it 3.5 stars.