We have received a report that a security vulnerability has been found in the game engine used to develop this application, and we are currently working on a fix. Along with this corrective work, and taking into consideration security measures, stability, flexibility of updates, and future support for VR devices, we have decided to release the OpenXR version—previously available as a beta version—as the official version.
As for the current version 1.2.7, we plan to apply the security fix and continue to make it accessible under the name "1.2.8 – Previous version" (However, please note that due to changes in the game engine specifications, version 1.2.8 will forcibly display a splash screen at startup. The OpenXR version will not display a splash screen. Access to "1.1.9 – Previous version" will be discontinued.)
We will provide further updates as soon as the fix and verification processes are complete.