As was mentioned a lot you're aiming idea isn't the greatest. I understand why you did it (Clicking on things isn't hard.) If you made the aimer itself move rather then a dot in the aimer I think it would feel quite a bit more tolerable.
All in all it was pretty good, always enjoy this 'search and find' system. I really like how you used survivors instead of time in 1 day.
Sadly the aiming is a BIG part of a game like this but keep at it, you have something good here.