I hope what follows serves as constructive criticism.

There is a message in the level select panel saying you should pick the levels you want and select "play" in the menu. There are several problems with this:

1- The game's main lobby is seemingly called the main menu (that's where I went to when I pressed "main menu" in the the game's option menu), so I thought I had to simply go to the green "play" flag in the corner of it.

2- That was wrong, so I looked in the options menu for the button. Turns out the button is not really called "play", but "playlist".

3- As you add levels to the playlist, there is seemingly no way to track what the playlist currently looks like. If you make a mistake along the way and it's not the last level you added, you have to re-do the entire thing.

4- One would think then that you'd manage the playlist via the "playlist" button in the options menu, but no. Refer to item 2.

5- I forfeited one level that was too hard and went back to the main menu (I suppose that was the only level in the playlist). I added new levels to play and hit the playlist button. I was back to the same level I had just forfeited. Turns out that nope, the playlist doesn't get . But this time I forfeited it and got sent to one of the levels I had selected instead.

6- Finally, the level order in the playlist is counter-intuitive; the last level you added is played first, so it goes backwards than what you would expect from making a song playlist, for example.

The user experience when selecting which levels to play is very bad. It needs a serious overhaul.