"Remember, badges are only given to games with high scores! If you want badges on this game, make sure to vote 5!!!" Im going to rate 1/5 because of this
The better way to dont let Ninja Champion make a Gem to be stolen is having the upgrade that damages your enemy if holding the gem, and the one who make the gem return to cave..
Nice game, I hope you add somethings with the time.
Now, I'll tell what I find of this game :
-Towers : 4/5 > Crypt is a bit overpowered and Temple is a bit UNDERPowered
-Enemies : 3/5 > Ninjas are way annoying, their smoke bomb can always let them cross the entire map with a gem, and some enemies are too weak.
-Spells : 4/5 > Nothing to say.
-Dificult : 4/5 > The only problem here is the ninjas.
Overall : My rating is 4/5