It was an Android and iOS game. Therefore, any "Geometry Dash 1.0 Download REPACK Pc" you find is an unofficial, hacked-together port or an emulated version of the mobile app. Understanding this is crucial for managing your expectations.
Ironically, the legitimate version of Geometry Dash 1.0 does not have a practice mode (that came in 1.3). If you download a repack, you still cannot place checkpoints. Geometry Dash 1.0 Download REPACK Pc
How to Safely Download and Install Geometry Dash 1.0 REPACK PC It was an Android and iOS game
Run unverified software inside a virtual machine or Windows Sandbox to isolate potential threats from your primary operating system. Geometry Dash 1.0 Download REPACK Pc