Has anyone here played Infinifactory? It looks terribly intriguing, and I've enjoyed Zachtronic's other games, namely Spacechem (which I'm terrible at), and Ironclad Tactics (which I had actually hoped would be turn-based, but the game is still quite charming). Having what appears to be successive challenges (a la SpaceChem) is fine, but what I'd really love is some ability to dictate your own objectives. It entered Early Access quite recently. As a side note, I would hope that as the authors of Infiniminer (the inspiration for Minecraft), the Zachtronics guys are seeing some of the billion-dollar glow of Minecraft, or there's no justice.