Case Studies5 min readMay 14, 2026

PNJ's AR Face-Tracking Catch Game: A Marvy Co. Case Study

Marvy Co. built PNJ an AR Face-Tracking game where players catch falling jewellery items using their face. Code Crush's editorial analysis of a publicly-documented Marvy Co. project for a luxury jeweller.

Code Crush Team

Gamification Agency

PNJ AR Face Tracking game — Marvy Co. luxury jewellery case study

About This Case Study

This is an editorial analysis by Code Crush of a publicly-published case study by Marvy Co. The campaign was produced by Marvy Co. for PNJ (one of Vietnam's largest jewellery brands) — not by Code Crush. We're examining it because it is one of the cleaner public examples of pairing AR face-tracking with a luxury brand without breaking the brand's tonal register. Quotes attributed; links to the original.

What Marvy Co. Built

From Marvy Co.'s public write-up on the source article:

Responding to PNJ's request to promote the brand image, Marvy Co. used the "catch-the-item" gameplay and selected valuable products from the brand to embed in the game. The "catch-the-item" gameplay is a common style that most users love, and combined with AR technology — specifically AR Face Tracking — it created an AR Game that's fun while still being luxurious and elegant, just like PNJ's brand image. (Marvy Co., translated)

Project page: PNJ AR Face Tracking game by Marvy Co..

Why Face Tracking Fits Luxury Jewellery

AR catch games normally use the device's accelerometer or touch — tilt the phone, tap the screen to catch falling items. Marvy Co.'s choice to use face-tracking instead is the most interesting design call in the campaign:

The player becomes part of the frame. Face-tracking puts the player's face inside the camera feed. The jewellery falls toward the player, not toward a generic basket icon.
Try-on adjacency. AR Face Tracking is the same primitive used for virtual try-on. Players already understand "my face is the input." This is the first step toward an actual AR try-on experience.
Premium gesture. Catching with the face — tilting to position — is a gentler, slower gesture than frantic tapping. The pacing matches luxury better than arcade rapid-fire.

What Marketers Should Take Away

The wrong gesture breaks the brand. A luxury brand catching with rapid taps would feel cheap. A premium brand running a face-tracking AR catch game feels considered.
Face-tracking is a try-on stepping stone. If your category supports virtual try-on (jewellery, eyewear, cosmetics, fashion), a face-tracking AR game is a low-risk warm-up that builds player familiarity with the input.
Choose the falling items carefully. The catch game implicitly says "these items are valuable." Pick the products the campaign is built to sell.

How Code Crush Would Build a Similar Activation

Code Crush builds custom WebAR experiences with face-tracking, image-tracking, and world-space anchoring. A PNJ-style catch game would pair our 3D rendering stack with face-tracking inputs to produce an experience that lives in a browser — no app install required, full first-party data capture at the end of every play session.

@youtube[TBD|Marvy Co. — PNJ AR Face Tracking game]

Source: Marvy Co., "10 Ý Tưởng Triển Khai Chiến Dịch Marketing Gamification và AR", marvyco.com. The catch-the-item gameplay, AR Face Tracking choice, and PNJ partnership are attributed to Marvy Co.'s public write-up.

Tagged with

case studyMarvy CoPNJAR face trackingluxury jewelleryWebARVietnam
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