Here’s a concise review of Need for Speed: Undercover - Japan - v1.01 :

As a niche, region-specific release, this Japanese version of NFS: Undercover (updated to v1.01) offers a few subtle tweaks over the standard Western release. The most notable change is the addition of Japanese UI text and localized voiceovers—though purists may still prefer English audio with JP subtitles.

The v1.01 patch smooths out some of the original game’s notorious framerate drops, particularly during highway chases and rainy night races. Load times are slightly improved, but the core physics remain the same floaty, drift-heavy handling that divided fans.