If you liked the Steins;Gate anime, the Anime-Planet community thinks you'd like:
Follow interstellar bounty hunters Spike Spiegel and Jet Black as they scour the galaxy for criminals with prices on their heads. Hoping to escape their past, they live on the spaceship Bebop, but it's a dangerous business and old enemies don't forget easily. Allies come from unlikely sources, however, as they find comrades in the beautiful swindler Faye Valentine, the genius child hacker Ed and the genetically engineered 'data dog' Ein. Will they be able to help each other though their respective struggles, or is their fate really inevitable?
Two character-driven shows with a variety of higly random plot elements, some situational comedy, and a shared infatuation with the concept of fate (though they play with it in different ways and arrive at very different conclusions).
When poor detective Kuro Daijuuji accepted his first well-paying job, he had no idea what he was getting himself into! The request: to find a magical grimoire for Ruri Hado of the Hado Financial Group. After searching all of the bookstores and antique shops in Arkham City and finding nothing, Kuro is just about to give up when a grimoire happens to fall out of the sky and land on top of him... in the form of a young girl! Her name is Al Azif; and she is being chased by the Black Lodge, a group of evil mages. The two find themselves surrounded, and in order to survive Kuro is forced to enter a contract with Al and become the pilot of the Deus Machina Demonbane.
In both series, Okabe and Kurou start out as complete losers but their life changes after meeting an extremely intelligent tsundere, whom they grow attached too. As events occur, both guys become obssesed with trying to beat the impossible odds they face and defy fate.
Demonbane is much more action and fantasy based, while Steins;Gate is more suspensful and has plenty of scientific talks. Both series are also based on a visual novel by the same company but while Steins;Gate received an excellent adaption, Demonbane's adaption is rushed. If you enjoyed Demonbane, you should watch S;G and Demonbane can be pretty enjoyable if you set your expectations low.
In a futuristic world almost barren of life, mankind is confined to mechanized domed cities where A.I.’s control all aspects of life. In this world, humans are no longer born, they are manufactured in a production line; and alongside them live androids known as autoreivs. Within one of these domed sanctuaries named Romdeau lives Re-l Mayer, one of a few citizens who aren’t entirely prevented from thinking. Her grandfather's prominent position and the affection of the scientist Daedalus have left her more free will than is normally allowed, but Re-l has started to question the sanctity of the city and the citizens' perfect way of life. With mysterious beings known as proxies causing havoc and a man named Vincent causing great influence on her life, Re-l must travel outside of the city to find the answers she seeks and discover the mystery behind "the awakening".
Once upon a time, two brothers passed the happy days of their childhood by studying alchemy, which is governed by the equal transfer principle: an eye for an eye -- you can't get more than you give. But these brothers tried to defy that law, and a horrific accident resulted. Now, the older brother, Edward, is called the Full Metal Alchemist because of his metal limbs, and the younger, Alphonse, is a soul without a body, trapped within the confines of an automaton. Together they search for the power to restore themselves, to find the lives they lost so long ago...
Both of these anime deal with a particular (pseudo)science: In FMA, it's alchemy and in Steins;Gate it's time travel. A theme that runs through both of these series is the ethics of a scientist. Whether it be human transmutation or altering the past, these anime asks questions about the extent to which a scientist is morally allowed to toy with other's lives and play with fate. The protagonists of both series are rather unusual in their professions and attempt to rectify a mistake of the past from their own foolishness that cost them something dear but it looks to be an impossible mission or at least, an uphill battle with some amount of body horror (jellyman and chimeras D:).
Tarou has dreams - distressing dreams, related to the trauma he suffered as a child. His dreams and visions disturb his ease of mind, constantly reminding him of the darkness of his fear at the time he lost his sister all those years ago. He relives the fear, but can't recall any of the details of the time. Now, a new transfer student, Masayuki, takes an interest in Tarou's troubled past, as well as their school mate Makoto's connection to the dark incident. Under his persistence, the three boys end up visiting the site where Tarou was held hostage as a child: a decrepit hospital beyond the dam. The three venture forward to face their pasts and fears, unsuspecting of the bizarre world they are about to enter...