i've seen this...
the engine..or w/e, from a really old sandbox game where you made life and they looked EXACTLY like that. in fact, it looks to me that, as far as combat goes, you just plunked a player-unit w/ certain powers inside a world of those computer lifes. if so, bravo (that thing needed reviving).
oh, but im sorry, i originally mentioned that engine 'cause i wanted to know if this was inspired by that engine or were you being original or what? (by the similarities, i wouldnt be surprised by either usage of it [it's open-source; anyone can use it] or pure copying [once again, open-source]