I would like to suggest setting up PWA Website capabilities for the PixPet website.

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A PWA website is basically a just a website that you can install on your computer/tablet/phone. It's simple to setup and might help gamify the PixPet website more. Think of it this way: You go to the website, you get promoted to install the website as an app, and next thing you know, bam! You now have a PixPet app installed on your phone.

For clarification - this would require absolutely minimal Dev work to achieve and is definitely more along the lines of "something to setup" than it is "something to develop".

The awesome thing about PWA websites is that they can be installed as "Apps" on any operating system. Yes, this means you can install the website on Mac/Apple OS devices, Android devices and Windows devices with minimal(or zero) changes to your code.

You can also setup quick actions so if a user right clicks on the app, or long press on smartphones, the user can, oh I dunno, water their pumpkins or check their expeditions.

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Here is a detailed guide for how to setup PWA functionality, it's honest pretty easy to setup when you know how to do it. I think you will spend more time reading the guide and learning the theory behind it all than it takes you to actually set it up... Some features like push notifications might require more effort to achieve so maybe leave them till later.
https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps/Tutorials/js13kGames