Games
Introduction
The OLPC is an education project but that doesn't mean there is no room for fun. On the contrary, fun must be integrated into the child's educational experience.
Ideas
There are many constructionist game ideas to be found here. In order to view them you need to go to Squeakland, download Squeak, and install the SqueakPluginInstaller. Alan Kay is likely to have the entire Squeak environment up and running on the OLPC hardware soon, however, not all regions will want to adopt that as an all-encompassing platform. The same types of things can be implemented in the OLPC Python Environment.
Board games
Chess would be a natural game to have. The international chess federation is one of the most inclusive organizations in the world. Many free players, graphical boards, and internet players are available.
Awari and similar sowing games are popular in african countries.
Card games are also popular in many of the target countries.
The networked evironment in which the laptop is embedded would be natural for peer-to-peer multi-player games. Many of these games could provide both a computer opponent and the ability to connect with other laptop players.