Ok, i have a problem in this game, colors association never works, it's mostly recomended(For me) the use of association to Remember the word, like. Ku looks like a Bird saying "KUkoo!", A has an "A" drawed on the word, and there's a bunch more of better associations than just color and pronunciation...
The game freezes when i play Endless defense at wave 15, after i quit the the endless to buy some perks the game freezes... and i lost $2000, please fix this Shit!