Excellent graphics, great sounds, intuitive UI. But the core gameplay loop has problems. Buy a crafting recipe: $50k. Buy a constructor slot so you can use it? $100M. Yikes. That's more than four orders of magnitude. And it doesn't make sense. How are fuses part of the recipe for ball bearings? The idle timer is really wonky. It usually doesn't keep track unless I keep the app minimized. And it usually doesn't load the ads for me get to idle time or the random common rewards.