Wait, is this the third one? The third one was decent, I think. I can't remember. The Cube series as a whole, however, is enjoyable and almost makes you think about stuff--almost.

Let down by excessive amounts of uneeded lunacy in the last third. Still interesting concepts throughout. Some poor acting / voice dub work in the cube too unfortunately. Still cube fans will get something out of it.

A prequel to Cube that is only worth watching for Cube fans since it gives that film some back story (but did it need it? No) It falls flat in every other aspect though

Better than the other two. Still falls prey to cliches but the big brother aspects are more interesting this time.

Not cube.

Ugh, watching all three Cubes in a row with sleep deprivation is not good. Not good at all.

Having really enjoyed the original Cube, watching Zero feels like having really enjoyed a pizza only to later discover that it was prepared by a smelly racist who refuses to wash his hands after going to the bathroom and had sex with your mother (and never called back).

It's probably a good thing that this prequel didn't even try to take itself seriously. The overacting by the supervisor was probably the most enjoyable part.

Better than the second movie, but still not as good as the first. You get SOME backstory on what the Cube is all about, but it isn't very revealing. Some characters are really odd, and I think in the end it raises more questions than it answers, but it's worth watching if you really loved Cube. I just advise staying as far as possible from Cube 2, unless you really want to see how bad it is. Each story stands on its own, so you can watch them out of order.