I know it is no fault of yours but I can not play this game on linux because of unity, or at least not with my limited knowledge of emulating windows while using it.
I think there may be a bug in the arena where after you lose, especially have noticed this when on the last battle before a reward, you fight the same opponent that just beat you. Keep having to lose to a nearly ascended demi-god with my immortal and my avatar which is alreayd dissapointing, and then auto losing again by getting placed agains the same person as my first battle. with 3k HP I just can't catch up to them even when playing flawlessly and wiping their board.
Like the idea and look of the game. I couldn’t tell how much cards costs (the blue bar thing). Suggestions: spells are pretty much useless right now except in very special situations or if you have 5 guys out, perhaps make it to where you can play one creature and one spell a turn. Also the deck making is hard and confusing, it was hard to the the red dots that you click to look at more cards maybe an arrow on the right would help or make them brighter, the layout would also be better if just showed picture of each card you own and a number like x3 below it to show how many you have of it. Maybe an add button that doesn't take you out of your all cards screen would be nice. I noticed my deck kept getting bigger without me doing anything not sure if that is a glitch or what. Also not sure how speed works. Also when I opened a new pack it only showed like one of my cards and was glitchy just fyi. Good luck & sorry for being so nitpicky but hope it helps!
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Oh! Thanks for the heads up. We're considering an HTML5 version, though I can't make any predictions for when. Sorry for the inconvenience!