Steins;Gate, Robotics;Notes Recommendations
Both has the same Visual Novel Company and it makes Science Fiction very realistic. A little bit fun in the first, but it will be getting very serious about the story and it can make you believe what will happen in the future.
both animes give you a sort of "ah ha!" feeling at points as you figure out what is going on in the plot. also both of these are based on visual novels made by 5pb and nitroplus.
on top of they they both give off a feeling of friends coming together to work on something
They both have a similar plotline with both hidden conspiracies and sci-fi elements. plus it's the third of a series of sci-fi games created by 5pb/nitro+ which also includes Steins;gate.
Both are sci-fi anime based off visual novels made by the same companies and are set in the same universe. Both are also very slow-paced in the first half but speed up in the second.
The overall stories are very different from one another (one deals with time-travel while the other deals with robots), though the similarities are most obvious in the two lead characters- Akiho and Kaito are essentially a gender-flipped Okabe and Kurisu.
Basically, if you liked Robotics;Notes at all, you will definitely like Steins;Gate.