If you're looking for anime similar to Code Geass: Lelouch of the Rebellion, you might like these titles. All recommendations are made by Anime-Planet users like you!
Although Break Blade is still being released (and I have not read the manga), so far I think people who liked one of these should consider watching the other. They both involve a lot of action and a war, using mechas as their means. The relationships between Lelouch/Suzaku and Rygart/Zess are quite similar, in that they are comrades turned enemies because of a feud between their respective countries. Also, generally, they are both pretty fantastic :)
You probably will like both of these. I'm not huge mecha fun because most likely anime shows that feature mecha's as their main feature lack in story. Do not worry! The strongpoint of these shows is very unique characters and their abilitis that are absurb in the world.
Hopefully you will come to like both of these series because they're very nicely made and should be watched even though they have mechas. Maybe I should give up this mecha fear of mine but I have seen too many bad bad shows. It is very nice to notice that some of them are very good.
Both series feature friends in opposite sides of war of two kingdoms along with heavy mecha action. While CG revolves around on world scale, BB is limited to normal kingdoms.
Also CG has high technology mecha capaable of annihilating masses with single attack, BB features normal down to earth mecha mainly used for one on one battles and fairly limited in firepower, Making them realistic.
If you liked one, You would probably enjoy other one.
An urban legend states that those exceptionally gifted at gaming will be sent a special game invitation, and the winners of the challenge will be whisked away to another world. When Sora and Shiro, two hikikomori NEETs who happen to be both siblings and notorious gamers, receive this invitation, they defeat it with ease. And like the legends tell, they're transported to another world where conflicts, peoples' lives and even country borders are decided by competitions and games. Always up for a challenge, the pair quickly take on the obstacles that come their way, whether it be restoring lowly humanity's good name compared with the other races or helping influence who will become the next king.
While these anime differ greatly in plot and setting they both share the quality of being great thinking/strategy anime. Sora and Lelouch both have very similar analytical processes that the viewer is given access to. This gets the veiwer thinking and makes Sora and Lelouch very similar characters. The in-depth strategy analysis in each anime also creates a very similar feeling of suspense that fans of one would enjoy in the other.
Both anime feature an intelligent protagonist who always thinks 2 steps ahead, much like they would in a game of chess.
Both animes have a very similar style in that a very intelligent teenage guy works to overthrow a higher power. However, that is about all they have in common. The plot lines are both completely different styles (except for maybe the fact that they throw curveballs at the audience). I highly recommend both animes. They are both on my top 10 animes list and I will likely watch both over and over in the years to come. Unfortunately, only the first season (12 episodes) of No game No life is out so it kind of leaves you with a cliff hanger. No word on when the second season will come out.
In 1972, the Apollo 17 mission discovered a hypergate to Mars on the surface of the moon. Soon a war breaks out between Earth and Mars, and Martian soldiers begin to descend from the sky, riding steel giants, intent on exterminating humanity.
Both are centered around the conflict of two races, the Terrans/Elevens and the Martians/Britannians. Both anime have Mechs, with the Martians/Britannians having more specialised mechs and the Terrans/Elevens having regular millitary mechs.
The MCs are both highschool students who are calm, collected and think rationally instead of emotionally. Slaine and Suzaku share the same similarities as they are on the enemy's side even though their originis are that of the opposite side.
Both main characters are somewhat similar (smart). Both are mecha-anime with a world-war as main plot. I think if you liked aldnoah zero you will most likely like code geass, mabye not the other way around though.
If you like going beyond simple mecha action, then these animes are for you. Its not simply fighting mechas, but a battle of intellect as well. Deeper tactical and stratigical combat and warfare. If you like one you will most likely like the other
Touru Souma was a hacker in Steppen Wolf, a rogue group of four who caused mischief in the wired world. But during their final hacking session, they attacked the government agency known as FLAK and Touru’s friend Yuuya died in the process. Haunted by his memories, Touru vows to find the ones responsible for murdering Yuuya, even if it means he must join the enemy to do so. Further complicating the matter is the emergence of the terrorist organization Fei Dao; but the largest challenge Touru must now face is his forgotten memories – especially one involving a girl who continuously reappears in reality...
Though the settings and premises are quite different, Code Geass and Baldr Force can be linked. The characters of Toru and Lelouch are surprisingly similar, with both manipulating others in order to exact revenge. The two series carry the same general feel and style, so if you enjoyed one you likely will enjoy the other.
In either of these anime if you enjoyed the element of military battling terrorists in mecha then check the other out! Both have fairly intricate sci-fi orientated plots propelled by revenge that deliver many twists. BALDR is a lot darker though, Geass suffers from flamboyant theatrics.
When the oppressive Kingdom suddenly conquers the planet Kibi, a group of space cadets are stranded aboard the spaceship Amaterasu. With no money or power, the crew is funded by the Space Channel TV station… for a price. For though they are given the money to buy the Amaterasu and battle the Kingdom, Shinon and the rest of the cadets must also become reality TV stars, allowing the network to dictate how they look, how they fight, and how they react when faced with the horrors of death. For the cadets aboard the Amaterasu, the battle has just begun...
Starship Operators doesn't have the kind of depth that Code Geass does, but they still have quite a bit in common. For one, combat in both is largely tactics-oriented, with the focus being on outdoing the opponent more mentally than physically. In addition to that, both anime take a good look at politics, including the power of the media. If these are some of the things you liked about one of these shows, consider giving the other a try.
It's rare for me to make a reccommendation that's already been done, but this one really needs to be said again. If you've ever picked up a tactics game and fought on for hours with nothing but your brain for support, you will likely appreciate the sort of combat featured in these two anime. Starship Operators is all about stratgizing a plan beforehand and then putting things into action like a turn-based strategy game while Code Geass is more like an RTS, having the action play out while the strategy is worked around it. Both make for some high-tension battles that are both eye-opening and a joy to watch unfold.