Here are examples of names that don't belong in this thread: Street Fighter, King Of Fighters, Garou, Guilty Gear, Tekken, Last Blade, etc ktp usw.
Please don't make a list. Instead contribute by telling others why they should play the game you love even if it has a bad reputation on the interwebz.

My first pick for a fighter that doesn't get enough attention is World Heroes Perfect. The game is so full of stuff you can pull off yet doesn't need to be taken seriously to have fun with it when you start playing. The game is very match up heavy like SF2, but it doesn't try to stick to the SF2 formula.
Here are some examples of the fresh approach the game has: You can crush projectiles with certain regular attacks, so you're not restricted to just jumping or blocking with a character that doesn't have a projectile. It's also possible to deflect a projectile by blocking at the very last moment. You can crush a guard with a specific attack unique to each character (it's a property of the attack, so it's not just used for guard crushes). There are character specific attributes like double-jumping (only the two ninjas can do it) and also character specific skills called ABC moves (you perform them just by pressing A+B+C). One guy can catch projectiles, one can parry, one can "fly", one fat **** charges his super meter, etc. Everyone has one and they're all different!
There are lots of other little nuances and quirks to the system when it comes to throws, backdashes, autoguard frames in moves, etc, but I don't want to go in too deep with the system here. Just play the damn game and remember to try out a few (better yet try them all) characters to see how different they all feel. The game is very casual/beginner friendly for newbies playing together, but a pro can completely destroy someone who doesn't know how the game works.
Here's a link to an article about the game if you're interested in that sort of stuff: http://shoryuken.com/2014/05/02/numbah- ... d-tuskdon/