Well...
It's easy if you keep it easy, but if you do try to get experts on everything, it does get MUCH harder and you have to use a TON of strategy. Very good game, except for how long it takes you to upgrade. Even without going for expert, it basically forces you to replay levels for upgrade points which take FOREVER to get and are EXTREMELY necessary. Other than that, good job!
Okay, wow.
The flash game I'll mention isn't that old, so it won't sound that cool when I say, "The last time I played a flash game this long was on Bloons TD 4."
I've probly stacked up 10 hours on that game, including time at school and at home. I started up this game because I was looking for flashes to rate (so I can get my exp), and I had no idea what was in store for me! I did not plan on spending my night on a flash game, but that's what happened.
I flew threw Endurance VI and I've been playing for about 3 and a half hours straight now. That's how g'damn addicting this is. I'm a lieutenant only because getting expert scores are pretty tough. You have to have a lot of upgrades on your towers to get expert scores. I found myself getting 1000 or less expert score on the latest mission I'd unlocked, so you think it'd be easy when I come back later with more upgrades, but it's still hard.
All upgrades except the top 4 are useless, however. If you want to do damage, upgrade nothing else. I never even wanted to, and I'm glad I ended up not doing it, because the poison, freeze, multi, and basic towers are all useless by mission 27 (which is the mission I got bored at). The only reason I still use fast towers anymore is if the overpowered super towers leak, which doesn't happen often. I want to get to the last mission, because when my defense gets very powerful I cannot really use it cuz by then, the level is over, and I have to restart. So I'm sure the last mission lasts a jillion levels and I can actually have some fun with each tower.
The music was ok, but after about half an hour I shut it and the FX off so I could play my own music. Good flash games don't do that to me, but then again I've been playing for the last 3.5 hours.
So anyways, I hate when games end up having a component of it be useless. I really only want my super and fast towers, and I only need the top 4 upgrades to win. Aaaand the music is useless LOL
Bad comments, good game!
Hard, but not too hard. Good for if you have A LOT of time to kill. Keep it up. Though I only played until Mission 12. ^_^"
Flawed game
With the high cost of upgrades, this game basically forces you to replay levels over and over to get points. Why do that? With so many created levels, the user should be encouraged to keep playing the new levels rather than be forced to keep doing the same thing over and over.
The expert bonus is a pretty useless motivator when its incredibly to get when you come back to it later when you are overpowered for the level. Which frankly is the only way to get the bonus because you're not strong enough on the first try.
When not going for high scores, the game is easy. You just put it on 3x speed and don't speed up the waves.
Also one of the keys too all tower defense games is good tower placement and good tower combinations. Putting in expert bonus and telling the player to spam the waves all at once takes away from the strategy of this because basically every tower is going to be shooting at once anyways, it matters less if you smartly put a tower at place it can shoot twice. And slow towers are basically useless in a situation like that.
The game does not put up a good challenge on its own and puts too much repetitiveness on the player. Two big flaws. I did love the upgrade system however. This game could have been much better if executed better.
Very entertaining and lasting.
I found very well thought the fact that you could earn perks by amounting upgrade points; it gave the game a solid RPG feeling, but...the lack in number of available towers made the game quite repetitive at a point, also, a more varied array of enemies and bosses was sorely missed.
Also, may I ask from where did you borrow the backgrounds?