meh, it's OK
The biggest problem with this game is the balance between towers. There is ZERO reason to use anything other than the basic towers. The other towers simply do not perform well enough to justify their high prices, and even higher upgrade prices. Also, bombs are pretty worthless to boot.
Good game
Here is a tip for those having trouble:
This trick is a glitch in the game that I found. First dont use upgrade points on the UPGRADES TAB until you have atleast 2000 upgrade points. By saving up points you can just hit the last box of each upgrade to the right 1 time and it will fill up all the other upgrade boxes for upgrade you chose, thus saving you upgrades points in which you can max out in like 2 hours tops.
By doing this the game becomes super easy.
Oh you can just check my review as helpful!
frustrating defense
The problem here is that sometimes the first raid is overwhelming and next ones are easy, this is no good for tower defense titles. The lack of money is neither good, i can only bought cheap towers and spam them since the others are too expensive and ineffective
Critisisms
I have been playing this for a long time, and here are my thoughts.
First, congratulations on a decent game. Now on to the skewering.
1) It is boring, overall. Same enemies, over and over again. Marginally different levels. If you want it to be less boring, you can start by reducing the number of levels, increasing their difficulty, and making it easier to attain upgrades. Essentially, make it a shorter game. Longer is not better, in this case.
2) Wave difficulty varies greatly. Enemies that are fast are also strong. Slow enemies in small numbers are weak and easy to pick off. One wave nearly breaks through, the next is slaughtered without effort. This is kind of dumb.
3) There is no point to expert difficulty other than to encourage players to repeat older levels. You cannot beat levels on expert unless you have an overwhelming level of skills compared to the difficulty of the level.
4) I don't care about the trophies or whatever. There's seven thousand of them and they are all the same. Oh, I got a level 3 money trophy? Woohoo, now the game is no longer an exercise in corroding my brain.
5) I didn't play it long enough to care about any tower except the regular one and the super tower. No other tower mattered. They are too expensive for their weak effect. Maybe if I bothered to upgrade them, but there was no point. I don't want to play for ten more hours just to finally have a use for them.
6) There is no strategy. This is not a strategic game. You stick a tower down at a u-turn. Level it up. Finish beating the level. Pick an upgrade. Repeat. Over, and over, and over again. Considering the structure of your game, there is no fix for this.
7) Did I mention the weird difficulty? The regular game is mind-numbingly easy. Drop some towers, go get a sandwich, come back to your win. Try it on expert and it's impossible. You are forced to get some upgrades before coming back. There is no in-between.
Anyway, it's not bad, but I am not going to finish it. It is too long and too boring.
A good game, but has flaws
The game was well done. The images are nice and the towers look cool.
Unfortunately, as was mentioned by Valisun, the repetition doesn't make sense. The game has a very steep difficulty curve, with the only way to beat new levels by repeating the previous levels over and over and over and over.... you get the idea.
Also, though the upgrades are good, you punish the player for buying lower level upgrades.
For example:
Initial Money I costs 5 upgrade points. Initial Money II costs 10 upgrade points.
If you get initial money I, it also unlocks Initial Money I. This is fine by itself, but if the player buys Initial Money I, then Initial Money II, the player must spend 15 upgrade points. Thus, 5 upgrade points are wasted.
This may be avoidable in the early game, but in the late game it becomes a serious problem. Especially when you start talking about hundreds of upgrade points, and needing to upgrade as fast as possible to get out of a level.
It is this, paired with how rapidly upgrade's costs increase, that makes the game seriously repetitious.
The Expert bonus is great, but only to a certain point. Again, in the early game it starts easy to get (I got expert the first time on level 1 - It wasn't that hard) but then quickly progresses to being incredibly difficult and pointless. Perhaps a different idea would be to reward the player by scoring how he did on his level, and distributing upgrade points accordingly.
Perhaps some of those could be:
Weak Tactician (*1 upgrade points)
Good Tactician (*1.5 upgrade points)
Great Tactician (*2 upgrade points)
Expert Tactician (* 3 upgrade points)
Expanding further on that, perhaps the level could add score based on how much cash was left over at the end of the mission. That was never factored in.
Now, on to power-ups.
As with most TD games, Power-ups in this are pointless. The bombs cost TONS of upgrade points to upgrade, and generally are left unused. One could argue that they could be useful when facing large groups of enemies, but that doesn't happen often enough. Whenever I use them in addition to my towers, instead of just using my towers, I tend to lose the battle.
Of course, there is also the part about the special towers. I think they are a good addition to the game, but generally fall short of some of the other towers in usage. Why use a poison tower when you can use a basic or rapid tower, upgraded a few times? It tends to be a better idea to go with the latter, which kind of leaves your tower variation rather flat and boring.
Though this seems like a lot of critique, don't get disheartened! You did a good job with this game, but a few more things could be tweaked to make it more interesting.