d20 but non-DnD combat sources?

[Stormborn]

Krieg, thanks for that, it is the most radical one I have seen so far. I am asking all this because I am toying with something in my head, something different. just not quite ready to put it down yet.
Please, keep the options coming. Homebrew, published, or otherwise. Even non d20 sources that you think could be adapted.

 

[Krieg]

Krieg, thanks for that, it is the most radical one I have seen so far. I am asking all this because I am toying with something in my head, something different. just not quite ready to put it down yet.
Please, keep the options coming. Homebrew, published, or otherwise. Even non d20 sources that you think could be adapted.

FWIW Guardians of Order didn't completely eliminated BAB/AC, they just tacked on a Skill based progression in addition to the traditional ones.

You can find the Anime SRD HERE.