Google Maps Go - Designed to run smoothly on devices with limited memory and on unreliable networks
Snazzy Maps - Simple & Free To Use Themes for Google Maps
Where’s Waldo? - Find him in Google Maps
Stamen Maps - Turn any OpenStreetMap location into a watercolor painting
The Internet Arcade - 900+ classic arcade games, no quarters required.
MapStyle - MapStyle is a huge library providing a plethora of options for styling the map with detailed customization support.