ugh, alright, I did it, I played the first one of this trash series. People, since either the collision size of the block, or the collision size of the person is very poor, to beat the third level, you have get as far off the edge as possible, which will end up you being a tiny bit floating in front of the block.
But do you want a much better advice? Just leave. Give this game a 0 rating, and go play something else. You won't be wasting your time, and it will hopefully give this kid a clue that it is going to take more than an idle sprite, blocks, and a terrible collision effect to make anything close to a decent game.
The reviewers are either people who are actually reviewing and says this is crap, or just either a bunch of this kid's friends/ multiple accounts. There might be a few people that think they are doing this kid (yes, I have been just assuming the creator is a kid) a favor by saying this game is great, but you really are not. You can compliment him for trying, but still rate it at the max of .5 and tell him why it just is not good enough to be posted as an actual game so that people like me don't have to be rude and frank about it.
Now, I noticed that I can "wall jump", I don't think this was intended, but it also made me jump significantly higher. This game is actually better than its sequel, but it is certainly not even worth 1 star. Try out Game-maker, it can be quite simple while also getting into a bit more complicated things, while being somewhat free. I recommend using that to hone your game development skills for quite some time before trying to post up another game like this. But, as you are now, the games you produce can not be worthy of being a game with the others here, even though it is, because the people who are not doing this kid a favor and rating him really high up somehow managed this to go through Judgement.