Geometry Dash 2.3 APK patched refers to a modified version of the game's APK (Android Package File) that has been altered to bypass the game's copy protection and unlock premium features. The patched APK file allows users to access all levels, icons, and other content without having to pay for the game's premium subscription or make in-app purchases. The patched version of the game is often sought out by users who want to experience the game's full content without spending money.