Realm First Game Uploader

So... The first project has been uploaded. 

Our story begins with the release of World of Warcraft patch 9.2. Five minigames were introduced in it. All five was remade by me in JavaScript a week after (well, maybe a little bit more).

This one is simple: you need to "turn off" all squares by inverting either vertical or horizontal lines

First attempt was made in p5.js for some reason and was... gray and white? 

Then in time I've added textures from WoW and after a little more time decided to remake it once again now without any canvas purely on divs. 

There are some unknown reasons why it doesn't work in iOS and after some googling I still don't know how to fix it...