Naruto: Naiteki Kensei

Naruto: Naiteki Kensei is a free standalone game developed by the NNK Dev team. Initially released back in 2010 as a total conversion and modification of the game Half-Life, the game was created using the Half-Life engine and is based on the hit Japanese animation, Naruto.

The game features a fully 3D environment where players can navigate around using various techniques such as walking on water and dashing on walls. Players are able to compete online using a unique system that combines elements of a third-person shooter with action-based fighting games. Just like the popular anime, players can cast magic-like skills called Jutsus, string together long and powerful melee and aerial combos with Taijutsu, and do acrobatic evasive maneuvers, as well as utilize a wide array of weapons with multiple functions. 

In this game, you may take control of one of the main characters from the anime: Hatake Kakashi, Haruno Sakura, Uchiha Sasuke, and Uzumaki Naruto. Each of the characters has three specific Jutsus that they can freely use.

To play Naruto: Naiteki Kensei, you must have a Steam client and have the game Half-Life readily installed. If you are having trouble with the installation, you can check this installation tutorial.