To understand why this port exists, you have to understand the "multimedia PC" boom of the late 90s. Sony was aggressively trying to push its "Sony Connected" strategy. They believed that if you owned a VAIO PC (Sony’s computer line), you should be able to play PlayStation-like experiences.

There is currently no official PC port PaRappa the Rapper . The series remains a Sony-exclusive franchise, with official releases limited to the PlayStation, PSP, and PS4. Steam Community

“Finally, official rhythm input on keyboard — beat the chicken without controller drift!” “Mod support = infinite memes. Someone will add ‘Baby Shark’ as a boss battle.”

Because the PC port was a commercial failure and Jaleco no longer holds the distribution rights, PaRappa the Rapper PC is considered . You can find the ISO (CD image) on various archival sites. To run it on Windows 10/11:

However, players can experience the game on PC through fan-made projects and emulation. Fan-Made PC Projects

While there is no native Steam release, Sony released a remastered version for PS4. You can stream this to your PC via the PlayStation Plus Premium service. Note: Streaming a rhythm game adds unavoidable latency, so this is only for casual play, not for perfect scores.