Looks like you're going for minimalist, not amazing.

Player is a square with 2 square "eyes".

Ground is a line.

controls: left, right, and jump (and double jump)

No enemies, no objective, nothing to collect, only a few bits of ground.

Conclusion: this is like a drastically reduced version of that game that came out in 1981.

Suggestion: if you're going to "remake" a game that is about 40 years old: do it better than the original in some way.

On the up side: you've managed to make a game that's executable, and figured out how to up load it to New Grounds. This is by itself a great achievement, and a promising first step.

Now work on the content portion, and you'll have something worth playing.

3rd time around, maybe you can take it a step further, and make some money off it.

Other notable features:
movement was smooth and easy to control
Speed of movement, and height of jumps, was reasonable

I recognize that the double jump is a "standard" in this type of game, but why have it?
Once you jump, to change your trajectory is just "magic".

Have a reason why you can jump higher.
Some games enable this by firing a "gun" down to give yourself a mid air lift.

Just food for thought.

:)

I liked the game and it felt smooth. This was fairly well polished and I think you've got something simple, good, and fun here. I can see room for improvement but taking it for what it is at the time of submission, this was great. :)

A few suggestions I'd make are to keep the zoom of the block character the same in each level(instance?) for the sake of consistency. There were times when I felt like sometimes I could see the next platform well and other times I felt like I was just guessing where I was jumping towards the end with what I think were moving platforms. Another suggestion would be to add(if possible) the ability to set the control keys so people can customize what's comfortable for them. These are probably minor things but just my 2 cents.

Thanks again for making this game, I enjoyed it. :)