If you mouseover the big picture(s) at the top of the runicgames.com/hob/ page, it sometimes puts a rune of some sort under the cursor. I want to know what that's for. Anyone want to tell me?
I think what you're talking about is a little gunsight/target icon. It's to do with a small game you can play with the other pictures (hit the left/right arrows). It changes the closer you get to objects that may need further exploration. You may get a reward! These Runic folk are sneaky and it plays off the theme of exploration for Hob.