- No needs of third party software like Flash Player or Java.
- Works on mobile devices.
- Easy theming through css.
- Many possible layouts.
- Responsive - player can have any dimensions, and they can be changed any time.
- Replaying games using mouse wheel
- Permanent links
- Highlighting of coordinates mentioned in comments
- Score mode
It is licensed under the MIT License, so you can do basically whatever you want with it.
More information you can find at http://wgo.waltheri.net/player