SFX/Music
The SFX are pretty satisfying, and they motivate you to click faster and get to know more clicker-elements/more different SFX. I don't recall you having a soundtrack for the background, but that would be unnecessary for a clicker game.
Graphics
Your Graphics look amazing. Everything fits together, UI, Buttons, Background, etc. Even the Thumbnail looks amazing, and that's what I think makes your game stand out from most of the other submissions!
Intuitiveness
That's where I had some problems. Unlike Cookie Clicker, you don't say anything about a clicker-element when you hover over them. Made me unsure of what some buttons do. Could have some improvements
Idea
I think this was one of the Downsides. You pretty much copy and pasted the Cookie Clicker layout, mechanics, and everything else. Don't misunderstand me, it still is really fun and everything, but you could have at least changed up the layout, the buttons on the top right for example, or added some new features.
Conclusion [9.5/10 Stars]
All in all, it's a pretty cool game, I had fun playing it, and it was quite satisfying, even tho it was short. I especially liked the little animation at the end, made you look forward to it, and it didn't disappoint. You could probably publish the game as "Cookie Clicker 2", but better and in pixel art :)
Viewing post in Clickerstellar jam comments
Wow, thank you a lot! I was very inspired by Cookie Clicker and didn't mean to basically make a 1:1 copy of it, but I just got carried away and pretty much did that before I noticed. I plan on updating the game a tad bit to add things like item descriptions and unique mechanics. Thanks for the feedback, I greatly appreciate it!