This app was mentioned in 11 comments, with an average of 1.09 upvotes
It's an old game and chances are you've played it already but I absolutely loved Army of Darkness Defense. It has sound clips from the actual movie which are hilarious and the game play is well balanced/all around solid. I never spent a single cent on it and enjoyed every minute. You can do IAP if you want though.
https://play.google.com/store/apps/details?id=com.backflipstudios.android.aodd&hl=en
Yeah that's strange, I can't find it either. If I go to my apps in my account I can find it though there on the app store. It's by back flip studios
https://play.google.com/store/apps/details?id=com.backflipstudios.android.aodd
Sounds like an old game I used to play on my Ipod a long time ago. Were you fighting skelletons?
Edit: I found the game i used to play (I just googled ios skeleton wave) :)
ios: https://itunes.apple.com/us/app/army-of-darkness-defense/id431739110?mt=8
Android: https://play.google.com/store/apps/details?id=com.backflipstudios.android.aodd
Army of Darkness Defense is pretty fun:
https://play.google.com/store/apps/details?id=com.backflipstudios.android.aodd