Can't put my finger on it because it's been a while since i've seen it. But if i remember correctly thinking it was crappy included . . .
Horrible acting
&
Bad dialogue
If it's just about a few people trapped in a box, it doesn't make me care or interested in it for very long except in checking the clock to see how long untill it is over.
Or if it is about more than that which fans of the movie seem to think it fails at that. I won't claim to know what the film maker was truely trying to do with the movie, but i think i do. And in that i'm not all that impressed because i feel it could have been done better.