A new twist on a classic tower defense concept. I am afraid it's not a game for me. I feel it is lacking something and the game becomes boring for me very quickly. I don't like Angry Birds either but at least that one I played a couple of levels. It can't even be compared to Plants vs Zombies. Which I guess inspired you to make this game? I have played through that game twice.
Some pointers:
1. Intro text is a bit hard to read, make it pure white or add a shadow.
2. Translation could be a bit better. The choice of words are weird here and there.
3. Main menu buttons are bugged. Hold the mouse button down and move the pointers over the buttons. They don't always turn off.
4. Transition into the Goals is too slow/long.
5. There is no way to select levels (look at Angry Birds etc).
6. You should have a hint screen pop up before the start of the first few levels instead of the way your tips are displayed now.
7. I got 2 stars on each level I played. But there is no explanation of why I didn't get 3.
8. Star rankings are pointless unless I can select levels to replay.
9. Show what the upgrades do, and allow the player to undo them. This way the player can choose exactly how to tackle each level. I think this requires a whole different approach to the system though.
10. On PC it would be nice if the fruits could be selected with the number keys.
SimpleProgram had good ideas as well.
Again, I find the gameplay itself to be a bit lacking. All the above tips only fixes some rough edges. They may make some like the game but they won't make the game great. Art is excellent and there's nothing wrong with the programming, the problem lays in the game design. I am sorry but I have no idea on how to improve that. But I hope it is something your team can think about for your next project.
