Fanjita has updated his Tetris game to work on the Censored German version of Grand Theft Auto Liberty City Stories for the PSP, heres the info:
This package allows you to run GTA homebrew on the German censored (16+) version of Grand Theft Auto. It's a simple demonstration that homebrew games are possible for PSP firmwares v2.0, v2.01, v2.5
and v2.6 via the GTA savegame exploit. It is also a test of the general-purpose GTA loader that will be used as the basis for running the EBOOT loader on v2.01+. It also allows you to run up to 4 other GTA-ready homebrew applications, using 4 spare save-slots. This version is only for the German censored version of the game.