I really like the visual design of your game! I think the pixel art looks great and is really clean, but your icons and general UI are really strong and clearly communicate what everything does, which is important since it seems like you want your game to be very approachable despite how system-driven it is. The tile system also works really well, and the option to show and hide circuits and pipes is great for learning your game. I also found your tutorial really helpful, it did a great job of walking me through your mechanics. The only issue I had is that the extent of what you can do seems very limited, although it seems that was more of a scope/time issue and you have plans to add more systems into the game, which I look forward to.