The year is 2416 AD, 40 years into the war between humanity and the mysterious race called The Gods. Seeking to halt mankind's expansion beyond Earth, the Gods are on a campaign of extermination against the Martian colonies. As the sandships of humanity pit their guns against the Gods' forces, the alien Hell carrier is preparing to lead an assault on the Nile Canal. Now, captain Aku Kanki, one of the only ones to have fought Hell and survived, must command a state-of-the-art battleship in a mission to destroy Hell and strike a decisive blow against the God incursion...
The year is 2027, and robotic dreams of the past have turned into a present nightmare with artificial organs turning humans into machines, and advanced AI making androids more like people. With the boundaries of humanity and morality blurring, it's the inhumanity of modern crime that the Advanced Police have to face every day on the dark streets of MegaTokyo - everything from masochistic cyborgs to subway prostitute murders. Will the violence and corruption of the city be too much for new recruit Leon McNichol?
The animation seems similar, in my opinion... both animes deal with humans battling against an outer very threatening force. it also has some religious undertones to it... its obvious, but it didn't bother me much.
The Moon – Earth’s mysterious companion for countless ages, always keeping its dark side hidden from human eyes. It has not stayed hidden forever, as the moon has now been colonized and has a city of its own on the surface. However, something has taken offence at the human incursion – “The Sleeper” is awakening.
In the future, a devastating event known as Second Impact has destroyed Tokyo as we know it, giving rise to Tokyo III - a city under siege by mysterious lifeforms known only as Angels. Mankind's only line of defense are the Evangelions, a set man-made machines piloted by a trio of fourteen year-old teenagers, Rei, Shinji, and Asuka. The fate of Japan and the entire world now lie with these three children, though they might not have the power to save the most important thing of all: each other.
although the animation is very different, and Big Wars does not have a bunch of 14 year old kids controlling robots, it does however have a main character who has to save earth. both have religious undertones.
Set in the 21st century on a recently terraformed Venus, Venus Wars is the story of a war between two opposing nations, and the effect it has on a group of teenagers. Dark and gritty, with an air similar to that of Akira, it focuses on coming of age during the midst of a planet's devastating war.
Big Wars & Venus wars though they have different main plots they still relate to each other concerning the fact that a single ship on a planet in our solar system can make a difference that we do need to get along