I think you should give more points for multi-pops. And the game really lacks dynamics. Make the whole thing faster. The balloons all move at the same speed (that is a major flaw, if you ask me). Also, no explosion sound is present and I find popped balloons to look in a strange kind of way, really.
One more thing, the name. C'mon, I just can't believe you are "defending" the balloons that way. And nobody wants to play "balloon defender", think some "cruel penetrator robot", sounding.
I think with a little of work you can make this suitable for most of the players, except the babies, who you seem to be currently targeting.
BTW, the "pin up" upgrade has the wrong caption.
Doesn't require any skill, logic, thinking, whatever. Just rewards you for staring at the screen. A perfect game for a kid, I would say. It is obviously not my choice, really.
I haven't seen a full-featured unity game around there, but I find its capabilities very high.
This is not the game yet, I'm sure you know that. Go google for "terminal velocity". Good luck with your projects.
Ow one more avoider. Well done. But I hate it when you have no choice but arrow keys. WSAD would be a great alternative choice. BTW, kongregate scoreboard doesn't seem to work
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