Watched it... had a few problems... overall it was OK, but the MAIN problem with it is
"they buried the ships here before there was even humans..."
1. if there were no humans, why bury a bunch of war ships that could be used after millions of years to fight a race of beings you had no idea would have existed.... WHY NOT JUST TAKE THE PLANET?!?
2. For those of you who say "they needed our blood to fertilize their plants..."
a. This is a crappy civilization, they must REALLY suck at taking over worlds if they need OUR blood to do it.... that would make the planets they could take over VERY limited... like.. 1.
b. I'm sure that since they are far more advanced, they have unnatural fertilizers.... just like we have crap AND Miracle Grow... they would probably have human blood AND some other unnatural fertilizer.
3. Say everything else worked for some other reason... it would take a few YEARS to bury all these machines around the world... and the years that they were living on earth to bury these things, you think they would have gotten sick and died.... and if not.. why did they leave? they had just spent X number of years on this planet to bury war machines (not to mention they had to fly them there, cause they weren't space ships) just to pack up and leave in order to come back millions of years later to FIGHT for the planet...
4. Also, you think that we may have found at least 1 of the machines before this happened... with all of our sysmic devices, and archeology... and EROSION for crying out loud.. you think that atleast one ship in the entire world would have showed up... like while laying some water pipes, or building foundations (the first machine came up from under the street in NY.)
I really wish there were some sort of explanation for this, cause I thought it was actually OK... But this whole idea seems rediculas to me...
it would be just like if we decided to colonize the moon, and we built massive space ships to carry 50,000 tanks to the moon.. then we burried them a mile down, then left..