GTA GeoGuessr - 50K+ Monthly Active Users by Sergio PereyraGTA GeoGuessr - 50K+ Monthly Active Users by Sergio Pereyra

GTA GeoGuessr - 50K+ Monthly Active Users

Sergio Pereyra

Sergio Pereyra

Overview

GTA GeoGuessr is a free browser-based game where players are dropped into a random location on the GTA V map and must figure out where they are using in-game screenshots. Think Google's GeoGuessr, but set entirely in the world of Grand Theft Auto V.

The Challenge

GeoGuessr-style games had massive popularity, but no one had built a quality version for the GTA V map. The GTA community had millions of players who knew Los Santos and Blaine County intimately, but there was no way to test that knowledge in a structured, competitive format.

What We Built

Location-Based Gameplay Engine Built a custom game engine that drops players into random locations across the GTA V map (All, County, or City modes) and scores their guesses based on distance accuracy. The system uses a curated library of in-game screenshots mapped to precise coordinates.
Multiple Game Modes Three distinct modes: All (entire map), County (rural Blaine County), and City (Los Santos urban area). Each mode offers a different challenge level and appeals to different player types.
Zero-Friction Experience No account required, completely free to play. Players can start a game in seconds. This decision was key to viral growth, as it removed every barrier between discovery and gameplay.
Performance at Scale Built to handle tens of thousands of concurrent sessions with fast load times and responsive gameplay across devices.

Tech Stack

Frontend: React
Backend: Flask (Python)
Database: MySQL
Hosting: Optimized for high-traffic loads

Results

GTA GeoGuessr grew to 50,000+ monthly active users through organic word-of-mouth and community sharing. The game also cross-promoted KeyboardPartPicker.io (another project in this portfolio), demonstrating the value of building audience across products.
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Posted Jul 16, 2026

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GTA GeoGuessr