A simple mechas vs. aliens story like we've seen dozens of times before. A bit too simple, actually - it is short, linear, lacks any real plot twists, and some strange things are left unexplained. The characters and the dialogues are clichéd and sometimes dumb. There are too few characters: in all we see 6 people. The whole Japanese army is 3 pilots and a captain. The aliens are never shown, only their ships. The music is okay but nothing great.The only redeeming features are the quality of the graphics and the one real fight scene in the middle. That, and maybe you could call the captain's appearance a kind of fan service if you're into tough girls in military short skirts.It might worth spending 48 minutes on if you're a mecha fan and you don't expect much, otherwise avoid.