Thanks for the feedback!
I chose to create this game prototype in Angular as I've worked with it before and I unfortunately have no experience with Unity... yet :D But it's nice to hear that I'm not a total pariah with this idea.
It's open source, you can find the code at https://github.com/ofedo/angular-utopian-plant if you are interested! :)
I actually had a hard time publishing the game on itch.io, so it's actually published on github at http://ofedo.github.io/angular-utopian-plant and I just added an iframe on itch.io.