Ok

It was nice and simple fun. Just like a game should be. I think it needs a bit of music though. Well thats about it. Good job!

that was nice

it twas simple and fun and nice. It needs music

not bad

very simple game, but it was a lot of fun. i liked this one.

It's simple, but darn fun!

Wow! I have to say, I really do appreciate your originality here =)
Graphics were simple, but then again why would they need to be complex? Everything was drawn and represented well enough for you to know what it is, and also I like the shadow you drew on the ball - this gave it a much more '3D' feel to it and so I felt I was interacting with the game more. Is it just me or did the ball flatten a bit when it hit the ground? I noticed this even though it happened quickly, and even if it didn't it seemed to, this realism was a nice touch.
Sounds were pretty bog standard, nothing too amazing but then again not bad either. The sound effects were good and almost had a happy and 'wacky' feel to them, a nice little 'ching' when you collected those cold coins. I was pleased to see you made a bouncing sound effect every time the ball hit the floor; but it can also get pretty annoying after a while when you have no background sound, which is why I would suggest adding in a few choices of music whilst you are playing. Like before why would sound need to be complex? It still only makes up the main aspect of the game...
Game play if you hadn't guessed, is 'Jumpball's peak element though. It's simplistic but hey, it's downright fun! I never knew bouncing a ball could be so entertaining, which is why I respect the fact that you tried something different; it was daring because the idea is different, but I love the way you have hidden the fact that this is such an obviously simple game by making it a little more complex - just by adding those arrows that fire make such an enormous difference that you simply would not believe. This game feels like a classic to me, it reminds me of a free game you get with a mobile phone and I'm surprised why anyone hadn't thought of it until now. The game is very challenging to my pleasant surprise and this kept me entertained for a good 20 minutes - you really have to master this game in order to stop dying after the first few minutes. I can't believe it, I found it very hard at easy and there are 2 more difficulty settings! It's great this game is a challenge because it has such replay value, but you might want to alter the learning curve in the difficulties a bit. The little red blip appearing on the screen as to where the arrows where going to appear were a nice touch though and really helped make this game a little easier, I felt there was a sense of 'rhythm' that went into succeeding in this game.
Overall I can see no other game that deserves such originality as this. Yes it's simple, but I see no evidence of it being done on NG until now. But you broke the boundaries of NG gaming and experimented with something simplistic and entertaining, and if you ask me it worked! Well done :)

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~T_C

Just like a game has to be...

Simple, yet difficult. That's the way all the games have to be, don't you think. Just one thing: you could do some work at the background, it looked ugly. Awesome game anyways.
- Kael Sorrow