I played on highest quality settings. I did not experience any noticeable stutters or lag.
The first thing that stood out was the flickering. I think the flickering background on the title screen is a bit fast. It could also be problematic for people with epilepsy. My partner chose High to start and it was more faint and did not feel so bad.
The mouse is also flickering between a normal cursor and the hand cursor to start. It looks like the semi-transparent bars are supposed to slide over when the mouse is over them, but they just rapidly move back and for the causing the mouse to flicker. When I changed focus to write these notes, and moused over them, they did fully slide over. When I click back into the game window, they do back to flickering.
You’ve got a lot of settings. It would be nice if the Settings area was taller so more fit on the screen at a time. It looks like all the main menu options are the same height, and most could benefit from the extra space. Clicking Play pulls up selecting a save slot, which is taller. You could still use more space above, but even that much more space would be nice.
I like the inclusion of a changelog in game.
I like your intro having skip, continue, the keyboard inputs to advance, and the pagination indicators.
The starting tutorial is pretty nice, though the location it tells you to place the source is under a side window, so maybe start that closed, or instruct the player to do so. It would also be nice if you pointed out that the numbers you are pressing relate to things that are mostly under the tutorial. The popup notifications at the bottom left are good at letting you know what is happening.
After placing the Research Center it did not have enough power. While looking into it I got multiple pop up messages in a row, with the 3rd being about the research. There was too much information all at once as I was trying to fix the power issue.
Many of the names in the research tree are too long to fit. It would be nice if the images were made larger and the text was given 2 lines to make it more readable
After selecting the research the tutorial then told me to place more power. I think it would be better if you had this before opening the research tree, since the lack of power made me think I’d done something wrong and I started by placing more power myself before getting into the tree. I may have missed a step, but it mentions needing to use the market to sell, but does not make it clear how to reconnect the market. I ended up moving the research and putting a market at the end of the existing belts.
Right click deselects placing something, but does not deselect a placed item. I had to press escape to deselect, which on web also exits fullscreen. The selected item info box often feels like it is in the way, and I need to move the camera around to see things, but some of the popups also seem to be under it, such as if clicking on one of the build buttons, instead of using the keyboard.
If you click to buy something, and you can’t afford an option, it does not update when you can afford it, unless you click the button to open it again.
Overall, it looks really good. I like the graphical art and think it works for the game. The background music does get a bit repetitive. The UI could use some polish, especially with things overlapping, but otherwise it feels like a very nice game.