A much less intrusive user interface compared to modern "freemium" standards. Installation and Compatibility

Running the 1.0 IPA on modern iOS devices is difficult due to 64-bit architecture requirements introduced in later iOS versions. It typically requires legacy hardware (like an iPhone 4 or 4S) or specialized emulation.

In version 1.0, the core mechanics that defined the genre were already established: The Chase:

The 1.0 IPA was optimized for the hardware of 2012. It was a Universal app designed for the iPhone 3GS, iPhone 4, and the newly released iPad 3. Because of this, the file size was incredibly small compared to today’s multi-gigabyte games. The textures were lower resolution, and the particle effects were simpler, yet the Unity engine ran the game smoothly even on older devices.

Downloading IPAs from random sites can be risky (malware, modified code). Only get them from trusted preservation sources if you're tech-savvy.