Solid tower defense
I paid 2.50 on this game on sale and its worth it.
Played the entire game (70-85) minutes worth and had no crahses, glitches, freezes, etc.
Its very cartoony and aimed more towards children. But if you like tower defense and enjoy the challenge then i would say this game is good to go. I beat it in just under 90 minutes earning 3 gold per level. You could add about another 20-40 minutes of play if you wanted to not allow any enemies into yoru base. on a few levels i had 1-3 get by, but you still get the 3 gold, (max) so i wasnt worried.
It is usually priced around 5 dollars, but on sale for 2.50 is a killer deal and 5 bucks isnt bad, i wouldy pay more than 5 for it personally.