Engineering games
The best engineering puzzle games put you in the designer's seat: build a machine, make it work under real constraints, then make it better. Here is the full map.
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Zachtronics alternatives for mobile and web that are free
Great optimization games like Zachtronics exist, but almost all are paid desktop titles. Here are the ones you can actually play free on mobile and web.
Games for programmers that scratch the itch, no code required
The best games for programmers give you the thinking you like about the job, algorithmic logic and clean optimization, without writing more code after a full day.