"Killer Instinct" has officially launched and some gamers may not be too impressed with the six-character roster available in the game.

In a fighting game, you want to have a plenty of options when it comes to choosing a character, but critics didn't necessarily mind the lack of a "full cast." Reviewers praised the combat improvements, calling it "fluid" and acknowledging game developers have learned from "past mistakes."

Check out what game critics had to say about the "Killer Instinct", available for the Xbox One on Nov. 22.

IGN rates the game at 8.4 out of 10:

"The sad truth about fighting games is that much of what makes playing them against others interesting is usually kept obscured. Killer Instinct succeeds enormously at exposing all of that information to players of all skill levels. Not only is its combat system flashy and well thought out, it's well explained too, thanks to its powerful training tools, and what is easily the most complete guide to terminology and tactics ever assembled in a fighting game. Though it lacks an arcade mode or a full-sized character roster, Killer Instinct delivers where it counts."

Joystiq gives the game 3 stars out of 5 stars:

"Killer Instinct isn't finished yet. It's an attempt to get players to buy into a promise that the full game is still on the way, that investing now will guarantee an experience on par with other fighting games - eventually.

"Right now, there's little else aside from training, survival and online modes. There isn't a story mode or an arcade mode, though the latter is promised for the future. There are only six fighters, with two more to come during the game's first season of content. As it stands, Killer Instinct is a streamlined fighter designed as a far-reaching modular experience, which highlights one of its key problems: a dearth of content."

Xbox 360 Achievments rates the game an average 70 out of 100 points:

"Killer Instinct is by and large a more than satisfying return for a fighting series that's been left on the shelf for far too long. As a modern fighting game, it manages to hold its own against more seasoned stablemates, thanks to its accessibility and hidden depths. Killer Instinct is a superb fighting game that's currently lacking in content. Please sir, can we have some more?"