I rather enjoyed that I got to make the discovery that the particles were coins, moreover, I enjoyed dropping STRAIGHT into the game without having to read anything or press any buttons. Lastly, this worked flawlessly on my iPhone, bravo to the work you did to make that happen!
Thank you. Making coins looks like coins doesn't require adding text, so i'll definitely do that. And yeah, it's not so easy to convey upgrades effect without text, but at the same time at that point you kind of want a bit of rest so reading is ok. I really dislike game that take forever to load and show pointless menus before letting you play.