I really love this, I need to show this to my friend who I was just having a conversation about Ohm's law, and he didn't understand what power actually means in real world terms and I think this game may help. I think you should show the amount of work too since that is part of the power formula; Power = (Work / Time), but only because I was trying to explain how work/energy and power/watts are different things. Anyways cool game, serious recommendation; I would add animations enlarge the highlighted card since the game looks a little barebones without any FX. Though I imagine it was hard enough to just make a deck builder in a week already.