Maybe my phone is too old? Runs horribly on Firefox/note3

Didn't even realize it was I teractive u til half way through when my phone started spitting out audio then a second or two later I saw a block randomly move(well bot randomly but no abim while it was catching up).

Tried to long press to slowly do something, still no joy.

Edit/note, I do look forward to seeing this on a PC though, judging from the comments :-)

Edit: slightly older version of chrome did work better(although note the edge report lower)

Edit 2: I was bored. No audio in brave browser :-p