Age Rating
4+
Apps in this category do not contain restricted content.
9+
Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.
12+
Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.
17+
You must be at least 17 years old to access this App.
Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

About Block Codex

Block Codex is a real-world exploration game. Your mission: walk every block in New York City. All 120,000+ of them.

THE GAME
Open the app and start walking. Every block you walk gets marked on your map. Blue blocks are conquered, gray blocks are still waiting. Your goal is simple: turn the entire map blue.

The city is divided into 50+ neighborhoods across five boroughs. You can tackle them one at a time or bounce around - your strategy is up to you. Some neighborhoods are huge, some are tiny. Some are packed with streets, others have long avenues. Each one is a mini-challenge.

LEVEL UP YOUR STREAK
Walking the same blocks over and over won't help you. The game only counts new blocks - you have to keep exploring to make progress. Walk new ground every day and you'll build a streak:
- 5 days: You're getting serious
- 30 days: This is a lifestyle now
- 300 days: Legendary status!

Miss a day and your streak resets to zero. No mercy.

COMPLETION ZONES
Each neighborhood shows a completion percentage. Hit 100% and that zone is done. But there are always more blocks waiting. The game is massive - finishing even one borough is an accomplishment.

THE INTERFACE
No tutorial needed. The map fills your screen. Tap a neighborhood to zoom in. Toggle between "show all blocks" and "show only unwalked blocks" to plan your route. Your stats sit at the top. That's the whole game.

SOLO PLAY ONLY
This is you versus the city. No leaderboards, no social features, no comparing progress with friends. Your walking data lives on your phone and nowhere else. We don't collect anything or track anything.

WHO SHOULD PLAY
People who like completion challenges. Urban explorers who need a goal. New Yorkers who want to really know their city. Anyone who's ever played a 100% completion run in a video game and thought "what if I did this in real life?"

Download it and start playing!
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What's New in the Latest Version 1.0

Last updated on Feb 10, 2026
Version History
1.0
Feb 10, 2026

Block Codex FAQ

Click here to learn how to download Block Codex in restricted country or region.

Block Codex Alternative