Puzzle games can often frustrate me because they are designed with a single solution in mind. It's easy to concoct some obscure answer to a problem that makes sense in my head, but in reality it won't make sense to most people. Making problems that have a breadth of different solutions allows for the game itself to progress faster but at the same time incentivizes improvement. That's why Molek-Syntez hits all the right buttons for me. It's one of those programming games which has a complex system with open-ended problems. It's not to difficult to brute force solutions with enough instructions, but the real reward is finding the optimal solution. Much like programming in real life, efficiency is key, and the game even shows you a bell curve of solutions which always intrigued my curiosity (i.e. how the fuck did they do in that few cycles I need to figure this out for myself). I remember a few levels into the game I had really bad results and the levels were getting quite tough. Out of curiosity I decided to google what one of these pristine solutions looked like and I realized you could configure the starting position of the little modules that shoot out hydrogen. I was so excited to apply this new technique that I replayed older levels with the challenge of getting the best possible answer. The point is that the mechanics themselves are intuitive and fun to play around with, and every time you pick up new techniques and algorithms you can go back and apply them to get better solutions. This, in turn, adds something that is rare to find in most puzzle games: replayability. You can spend hours tinkering away to shave cycles off your solution, or you can just go start to finish without worrying too much about efficiency. Worth mentioning the atmosphere of the game (I'm referring mainly to the sound effects and ambience) really compliments the experience of playing. The sound effects for right and wrong answers became like dopamine receptors/inhibitors, and the game itself has this isolated feeling to it, which makes it easy to get immersed in the work. Also their version of solitaire is quite good.