Note to readers re:CryptoZoons

The CryptoZoons game, for me, was a bad investment and a cautionary tale about blockchain, tokenomics, and the play-to-earn sector. I don't recommend investing in this game and for that reason I can't recommend ZOANMasterJS as an add-on browser extension. Nevertheless, I had a lot of fun building it.


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A JS class that enhances the https://app.cryptozoon.io/ UX experience while offering an edge in battle.

ZOANMasterJS is open source, but access to the API requires a .01 BNB tip to the development team every 40 days.

You can still download and install this asset and enjoy a 14 day free trial without having to tip any BNB. The trial is tied to your MetaMask wallet address.


  • Prominently displays the USD market prices of BNB, ZOON, and YAG
  • Prominently displays the current user's ZOON/YAG balance as well as its converted values in USD and BNB
  • Prominently displays the current user's BNB balance as well as its converted values in USD
  • Shows ZOAN profitability performance as well as averaged performance statistics across the 24 hour, 7 day, ans 31 day time ranges.

Feature Screenshots

Zoan Profitability Tracking

We're now tracking both Yaki Gold and Zoon.


ZOANMasterJS Header


Battle History Insights


How to Install in Chrome

Install a Chrome extension that will allow custom JS & CSS codefor websites. I recommend this extension but if anyone knows better ones I'm happy to add them to the list: https://chrome.google.com/webstore/detail/user-javascript-and-css/nbhcbdghjpllgmfilhnhkllmkecfmpld?hl=en

Access this file and view the raw version of the code: https://github.com/phoenix-tools/ZOANMasterJS/blob/master/ZOANMasterJS.js

Navigate to https://app.cryptozoon.io/

Open the newly installed Chrome Extension's Custom CSS and JS extension

And click "add new" to create a new custom JS/CSS profile for the CrytoZoon website

Add the raw code that was copied earlier into the JavaScript panel, and save the profile.

And that's it! The next time you access https://app.cryptozoon.io/ the JavaScript code should be loaded and ZOANMasterJS operating.

If you have any trouble installing please reach out to @atwellpub the Discord and I'll help asap.

Happy Zooning!

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