Hey cool! A new tower defense game!
*plays a bit*
*ranks up*
"Congrats, you ranked up, you know, could skip this foolish grinding by paying us."
...I'd rather not, thanks for the info though.
*later*
"You ranked up again, are you sure you don't want to buy this amazing cheat?"
NO.
...Oh crap I died...
"Oh no, you died, you know, you could avoid this if you buy this super fantastic cheat!!!"
I TOLD YOU I DON'T WANT TO BUY YOUR CHEATS, LEAVE ME ALONE!
This little skit illustrates the reason I rated this game a 2/5, not because of the pay content, but the fact that you shove it in our face every 5 seconds. I don't know about every one else here, but I prefer to play games, not to see ads on every screen.
If the ads get cut down, I would gladly give this a 5/5, but until then, good day to you.
Rating on the merits of the demo alone, this game is worth 4/5, 1 point docked for it being too short.
This game has a really cool concept, but it's not $15 cool. There are games out there with much more depth than this game, and those games are being given away for free by the creators.
I would love to play the rest of this game, but I don't feel like paying $15 for a game I'll beat in a couple hours and never play again.
The best way to beat mission 16 is to use missile type weapons, they home in on the fast moving cubes very effectively. All you need to worry about is dodging them (I suggest using the second ship due to its healing abilities, it gets pretty hectic in that mission).
 "Bloons Tower Defense 4"){kind=icon}
 "VVVVVV Demo"){kind=icon}
 "Onslaught2"){kind=icon}
 "Cube Colossus"){kind=icon}