The official Arc System Works Twitter announced the Guilty Gear XX Accent Core Plus R public beta test available for the PC will be available indefinitely. What does this mean? PC users will be able to access the public beta test until the GGPO rollback network implementation has been successfully implemented. As long as you have purchased the game, you will be able to play the public beta test to your hearts content. [Thanks, Famitsu!]
— アークシステムワークス公式ツイッター (@ARCSY_Event) November 17, 2020
It was announced in early October that Guilty Gear XX Accent Core Plus R would be implementing rollback. This feature will decrease the delay for inputs in the fighting game. The public beta testing period for Guilty Gear XX Accent Core Plus R began on October 29, 2020. This offer is exclusive to users that have purchased Guilty Gear XX Accent Core Plus R on Steam.
The official Arc System Works website details how Steam users can access the public beta test. This involves navigating some menus and selecting the right options in order to mark yourself eligible to participate.
Guilty Gear XX Accent Core Plus R is currently available for the Nintendo Switch and PC via Steam. Arc System Works also released the game for arcades in Japan and worldwide for PlayStation 3, PlayStation Vita, and Xbox 360.