Creating Interactive Images/Custom Google Maps

Hey guys,

I run a gaming website and we quite often find ourselves creating maps via photoshop and simply adding them to posts. However, we would love to be able to offer something a little more interactive.

This is a perfect example: http://goo.gl/DlWJhk

I’m not too bothered about people being able to select different areas via a dropdown or even controlling the entire map. I just want the kind of options it has when zoomed in furthest.

Does anyone know how I could go about doing something like this?

Thanks!