He is occasionally referenced in the news posts as being very good at math, ping-pong, Soul Calibur II, Puzzle Quest and Lumines.
Using various exploits (such as the TIFF exploit or specially crafted savegames from games such as Grand Theft Auto: Liberty City Stories, Lumines, and later GripShift) or original unprotected firmware, the user can run a modified version of the PSPs updater, that will install custom firmware.
Lumines | Lumines II |