While hardware-limited, the engine aims for much larger worlds than earlier homebrew attempts like Texture Support:
But at 3:21 AM, the PSP would sometimes turn itself on. And Marco would whisper: Not tonight, FATZIP. Not tonight. minecraft psp 321 fatzip
Yes and no. There is a real file with that name circulating on archive sites and torrent trackers. It usually contains a working build of LameCraft or PSP Craft v0.8. However, the "321" is a marketing gimmick. You will not find a unique, secret version of the game. Most likely, it is a repack of existing homebrew with a custom splash screen that says "321 FAT Edition." While hardware-limited, the engine aims for much larger