Its good but there are a few things that could be inproved...

You should add a Title Screen with some nice looking play, instructions and credit buttons.

You should add an auto restart feature if the marble hits the ground so that you dont have to keep reseting manually.

The level select menu could look a bit neater, also the level numbers are a bit mixed up whoops...

When the marble hits the goal the level should move on to the next one instead of doing nothing.

when you restart it goes to the wrong level... 🤨 that should be fixed...

Apart from this its not a bad game...

menu music is nice, i could sleep to it

nice

Reasons why this game is not gud:
1. The Menu is bad
2. I Have no idea what to do.
3. There is no start screen or anything.

How To Improve:
1. Add a start screen with buttons like Play, About and Controls.
2. Make better menus, the easiest things to do would be to add a background, get a free font (You can get free fonts from a place called fontspace.com, and tick commercial use) and make colorful buttons.

What You May Say:
"I put the controls in the description"
Well, It is better to have the controls in the game as well.

Please fix the problems I pointed out in this review,
Cheers,
MST_Creator

Really sluggish in Chrome.