Not bad for an early project. It looks like you're getting the basics of game design down. The game isn't too good, but keep at it and it looks like you'll be pretty skilled soon enough.
Not a bad start if it's your first time making a game. Try to fix the duplication bug and you may have something you can build on. You can add music, more levels, aswd controls for lefties, a point system, and some awards or medals.
Thank you for the support :)
Alot of glitches on an overplayed genre. Seeing as its your first submission though treading the path most followed is not a bad thing to do.
Work on getting the glitches worked out though, fake floors that i dropped through was one (and not the platforms that were meant to change to fall throughable) also a glitch where the ball spawns under the platform and begins an endless cycle of falling. Another glitch where you have multiple balls in the level at the same time. Think it was a hit detection issue as i got really close to one of the enemy balls but it didnt quite connect, but another ball spawned. was interesting as i thought it was suppose to happen as both balls jumped and acted when i attempted to move them, but i beleive it was a glitch as it never happened again.
You might want to fix that glitch and try republishing...
while not the seriously bad, I have a few problems with this.
some of the bugs I encountered: occasionally I had my character duplicated. while you pointed it out in the author comments, it happened to me when I simply spawned in the second level, not from an enemy. it stopped after I jumped a couple times. another bug that I encountered was at level 5. i was on the second non-moving platform, when i glitched through the floor. then, when I spawned I fell through the floor. and again, again, again, falling faster each time, until I couldn't even see my character. I couldn't continue without restarting.
now, I want to know: is this just a test, or is this going to be a proper game you're going to submit? because, as a test of your capabilities, it's pretty decent. but, as a proper game, it's not very good. the backgrounds and platforms are bland, it's generic and basic platformers like this have been done to death. if this is going to become a proper game, it's bad. but, if it's just something for you to hone your skills, show what you are capable of, it's good. at any rate, this review is waay to long, so I'll wrap this up. good effort, I've decided to favourite you, because I think you have great potential. I look forward to your future projects!