This DLC is not just a minor patch; it's a full conversion of the base game to VR. With the DLC, every part of Gal Gun 2* has been fine-tuned to run in VR, offering the complete experience from a new perspective.
The safest and most reliable way to download the 2019 Doki Doki VR Mode is through official digital distribution platforms. Step-by-Step Installation via Steam
The mode originally launched in Japan in late 2018 as a physical "Limited Edition" bonus. However, the standalone digital download for the Western markets (North America and Europe) finally landed in early 2019 (specifically February/March). This is why the internet archive refers to it as a "2019 download."
Unlike separate VR titles, the Doki Doki VR Mode is an for the base Gal Gun 2* game. It transitions the entire experience—from the frantic shooting stages to the infamous "Doki Doki Mode" interrogations—into a 360-degree virtual space.