I'm planning to add some more and better levels, but i wanted to see how it all worked first. This is my first game jam :)
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The new levels are good and I think it's pretty good that you expand the idea with red blocks. The simplification that you don't have to start from scratch as soon as you fail makes it very pleasant.
What I would add is a (success) sound when you reach the green block, an end screen with thank you for playing or you have won and maybe a level counter so that you know which level you are at.
It's a good and nice game!