I wanted to do stuff like that, but I've only just started learning AS3 and making games, so I'm trying to stick to simple games... D: Thanks for the feedback though! I will definitely try to add those in future games.
Pretty good game, the only improvements I can think of are saying which way the living dead are traveling, what kind and amount of living dead that will be in the next wave(when you mouse over the next wave button), and what will upgrade do( when you mouse over the upgrade button).
IF YOU'RE GOING TO CREATE A GAME ABOUT NYAN CAT PUT THE DAMN MUSIC IN! With that said, this game is just terrible. 0/5 because of lack of music, lack of start up screen, the ease of it(just spam space bar since your shots block his), and making the boss's health bar black...on a black screen. Your game is bad and you should feel bad
I liked the concept of this game...you just made it too easy. I felt like after I got the gist of what I was doing in level 2 then I was set for the rest of the game. There were too many coins, if you are going to make it a requirement, don't put twice as much as you need to pass.
You do not necessarily improve the castle to build a tower :)