Looking at the screenshot and reading others' replies makes me think of the game Spybots: The Nightfall Incident (http://jayisgames.com/games/spybot-the-nightfall-incident/
). It's a few years old, in fact I remember playing it on Lego.com back when I [EDIT] was obsessed with
Legos. Your game seems very similar, so I don't know if you knew of this game or not. Either way, I think you could get some good ideas from it. I remember having a lot of fun with it!
I still love Legos :p