The launcher only targets PSO2 Japan. It may not work for other regions without modifications. This project is just a hobby one. The launcher is designed to be left running for a very long time.

This project was originally designed to provide an open source launcher that prevents PSO2 NA from launching with the Memory Optimization argument “-optimize”. By preventing the optimizations from ...

Category: News 0 Amidst launch woes for the PC NA version of Phantasy Star Online 2, the fan-made launcher PSO2 Tweaker has been updated to include both Japanese and North American versions of PSO2.

PSO2 error code 667 (sometimes with NG login error) is a recently reported error on Phantasy Star Online 2. The error is reported on nearly all game-supported ...