What do you do in that game anyway? It seems like you can shoot the ants, and maybe jump up onto the blocks, but what's the scan thing for?
The idea is to rescue the people who are trapped in the city. You use the scanner to locate the people. It is green when you are heading towards them. Once you have found them you have to lead then back out of the city. Thems the rules... For an insight on the original game check out http://www.sandywhite.co.uk/fun/ants/default.htm