Infinifactory is a sandbox puzzle game by Zachtronics, the creators of SpaceChem and Infiniminer. Build factories that assemble products for your alien overlords, and try not to die in the process. 

Key features:

• LIKE SPACECHEM… IN 3D! Design and run factories in a first-person, fully 3D environment. 
• HISTOGRAMS ARE BACK! Optimize your solutions, and then optimize them more when you see how much better your friends did. 
• VISIT EXOTIC ALIEN LOCALES! Explore a story-driven campaign with 30+ puzzles, audio logs, and more. 
• BLOCKS THAT MOVE! Go beyond the campaign and push the limits of Infinifactory’s next-generation block engine in the sandbox. 
• STEAM WORKSHOP INTEGRATION! Create, share, and play custom puzzles on Steam Workshop.