GSMDev has released an updated Mobile version of CIA’s World Factbook 2008, a free Java based application which provides the US government’s profile of political, geographical and economic data of more than 200 countries and territories around the world. This version of World factbook 2008 contains updated information and fields as of 24 January 2008. To view the latest updates and changes in this version, visit cia.gov.

World FactBook include the following information about countries:

Countries
Country Flags
Country Maps
Regional Maps
Currencies
Country Comparisons
Factbook History
Notes and Definitions

Click here to download Mobile CIA World Factbook 2008 for Java J2ME mobile devices. [1.5 MB via getjar]. Due to the sheer size of the database, the application will not run on J2ME devices which limit the memory or install size.

To create a customized version of World factbook with only the fields and countries that you require, check this post.