Play Singapore alternate reality game (ARG)

I am developing an alternate reality game (ARG) called "Play Singapore" which uses a mix of puzzle-solving, treasure hunts and new media to let Singaporeans and foreigners explore and discover facets of Singapore's culture, heritage and attractions.

Players have to locate secret checkpoints in Singapore by solving puzzles found in cards or pages from a 'lost' diary which was supposedly written in the 1950s and 1960s .

Tying everything together is the >"Play Singapore" ARG blog which is written by a yet-to-be-named protagonist in this evolving story. The library is also running a competition which will run till Mar 2010, with prizes to be awarded to individuals or teams who discover each checkpoint first,.

The beta site is at http://playsingapore.wordpress.com, so please try it if you wish and let me know if you have any constructive feedback.