When you are crafting, on secondary attributes options, when you move your mouse cursor over any upgrade, you should see what mats you need and how much you have.
well, this game has 1 bad thing, all tanks, regardless of they cost, when taking bases do only 1 damage, so, it's very hard to take bases later levels, when low cost tanks are destroyed easily, but hight cost tanks drive to they bases and do only 1 damage...
We have adjusted the screen. Enjoy the game!