Shattered has added a lot more polish, some story elements, some more interesting bosses and challenges, and removed the frustrating weapon breakdown element. It's under active development, whereas I think the vanilla game is now a dead fork.
I need to get into this -- I was a massive fan of TA
I enjoyed one on my phone called "Pathos" but I don't know how open it is.
Shattered has added a lot more polish, some story elements, some more interesting bosses and challenges, and removed the frustrating weapon breakdown element. It's under active development, whereas I think the vanilla game is now a dead fork.