A very addicting game!
I wish there was more depth to building the factory... honestly, in my mind, the cards aren't quite as satisfying because their effects are invisible. It would have been cooler if there was more equipment to buy that had similar effects - e.g., a machine that would cause the dice near it to start rolling if one of the dice touching it had already started rolling, or a machine that duplicates the pips of any adjacent dice. It would make the task of optimizing the factory much more fun!
What really sells this game is the sound design - it's so satisfying to hear all those dice rolling!