Hey, as some people have mentioned, Android 14 and up now blocks ReactionLab 1 & 2 from being installed. I'm no longer maintaining these games, but in the interest of preserving them, I wanted to post a couple workarounds. These are both pretty involved and will require your own research online to set up.
At your own risk, you can use the ADB command:
`adb install --bypass-low-target-sdk-block name_of_package.apk`
Or, you can use Shizuku + InstallWithOptions and check 'Bypass Low Target SDK Block' (This is probably more user-friendly)