15 [Similar Anime] Like Gangsta.

Imagine a world where the law plays no vital part in, it’s your way or the death highway… if your attentions are drawn in then prepare yourself for a joyous ride filled with money and bloodshed. The quality of the songs presented by these giants are just the tip of the iceberg in this overwhelming experience.

Both shows have a serious tone to them, with action that manages to be flashy and over-the-top without letting itself become too unrealistic.
They also both focus on mercenary organizations that operate outside the law but still manage to have a tentatively good relationship with law enforcement.
The main characters of each show manage to feel somewhat different, although they have a similar level of ideals and morality (or lack thereof) when it comes to the work they do.

Similar in tone when comparing the brutality and the harsh reality of the main protagonist lives, work, and overall society each where given. Also, both main characters were given "unfavorable" cards in their lives but decided to challenge them in an act that might seem futile to others. But in reality, it is not so much the act of rebelling but the significance of said rebellion which is expressed in each story.

Since Gangsta. deals more of the seriousness of the underworld, Baccano! is the lighter version of that and yet it still retains its action sequences and intrigue in terms of its mysteriousness in certain things. However, there is more comic relief in Baccano! than Gangsta. Both also deal with heaviness of the characters' pasts as well as current predicaments.

Both shows are centered around the underground, crime filled lifestyle. Both of the shows are influenced by drugs, gangs, sex, and violence which add together into the overall gritty, slummy, and bleak atmosphere. Michiko to Hatchin differs however by having a quite different approach to it's story by presenting a more linear plot while Gangsta' story line appears to be driven more through character development.

Both series take place in seedy settings; Gangsta. largely takes place in a European-influenced city run by crime lords, while Samurai Champloo takes place in an ancient Edo period setting with corrupt authority figures being the norm. Both series also incorporate elements of drug use and prostitution, though those elements are presented/used in different ways in the two series.

Both anime deal with gangs, mafias, and other groups fighting over turf through crimes of violence and drug-dealing. Both also have characters with physical abilities that surpass the limits of normal humans. There's a good amount of action and mystery in both anime plus the art styles are somewhat similar.

Small cast of main characters, good action, older hero. And I think its the same band for the opening song.
Despite this being futuristic, I think some of the aerial martial arts has some of the same feel.
Gangsta would not be the only anime I could use to be similar, but just for the opening song it fits well enough.

Both anime are quite similar thematically and stylistically. They focus on the underworld and criminal factions, and have a lot of gunslinging action. Also, both anime have protagonists who are stronger than average humans and have enhanced abilities.

the story of how violence controls the world and only violence can save you from said world.

Focused on crime, violence, and trauma, the characters both fight in survival and what they believe is right. Caught between two or more forces they struggle to find the balance between survival and living a peaceful life.

Both shows have a similar style and vibe. The setting of both worlds focus around a gritty kind of lawlessness where crime and corruption run rampant in their location. Both main characters have something off about them. Their jobs are even quite similar. The characters that surround them are unique and strong in their own way with some exceptionally strong female characters. Worth mentioning that both opening songs are bangers.

Watching Gangsta Reminded me a lot of Cowboy Bebop. The main characters in both are essentially bounty hunters that are incredibly good at fighting. I also found similarities between the character Nic in Gangsta that reminded me of Spike Spiegel from Cowboy Bebop. The main difference between these shows is the time period. Cowboy Bebop is set far in the future, in a sci-fi setting while Gangsta focuses on the gang-world in a relatively modern, realistic setting. If you enjoyed Cowboy Bebop, I highly recommend you watch the first episode of Gangsta (or the other way around) as you may like it.

Both have the same story where it involves people fight crime outside of the law, where the character's themselves are pretty good at what they're doing except, Triage X was more on the ecchi and the fight style of the characters were too exaggerated, while Gangsta was more of action and slice of life where it has a sense of realism.

Set in European places with a focus on the underground world where crime, cops, poverty, corruption, blood and battles are prolific and part of daily life. The tough lives of the inhabitants of the "underworld", where organized crime reigns supreme, is portrayed without holding back. Both series hold dark and mysterious pasts that are pivotal to the development of the plot. They are both series that are for a mature audience with very dark, heavy and serious topics.

Though on the one hand, both these series have different atmospheres and settings they they share quite a bit in structure and plot. Both have factions warring against each other. They have people who are incredible powers to fight pitched battles. The two shows have lots of side characters with drawn out back stories that are played out in both stories.