second level too hard. like Jeffrey said u should add snap to grid. something like x or y += 32 when key pressed.

You made this in 12 hours, I am honestly surprised to see how much you improved. I'm really glad to know that you had fun making this, The game is simple and speaks for itself, The difficulty of the levels aren't consistent, but isn't a huge problem. Even though i tried beating the levels on the way you built them to be beaten, I found other ways of beating this, It would be a bit more challenging if you added some collectibles, but still a nice game. I am glad that I waited for the next game.

Hey, it is indeed a good basis, especcially in 12 hours!
I think that with snap to grit it's meant that the 'characters' snap to grit, how it is now it's rather slidey, which kills you. The second level has appearence issues (in chrome) like the first right to up coner has a grey block (as in the y below)
y
x x

Secondly the third level is unneededly big, making sliding to the left as your first move take really long, which is anoying when you die because of sliding when moving the circles together (at least that is wat happened when I used the upper grey one to get together (twice) (botttom grey block didnt have this issue on first attempt).

After failing the level after that twice because of 1 mm to far to the wall I decided to quit.

Maybe also add an story (like movies, games are about relaxation as much as emotions such as attachment) (like empathy which even happens with just circles(unless per example autisme))

Did enjoy it enough for the time spent =D

Just having a snap-to-grid behaviour would greatly improve it.

Keep making games and having fun doing it. Be sure to keep improving while you do.