Rock'n'Roll Defense
What is more precious than a band rocking to their fans? Protecting the rock show against an incoming wave of evil people who clearly listen to pop, country, rave and other song styles!
Blast these foes away with a variety of speakers you're going to carefully position in available locations, just like in any other Tower Defense game. Adapt to each map by bringing four devices of your choice to build on site.
Facing off against nine waves of uncultured fellows on each level, keep the show running no matter how much you have to spend! Apparently, that's how you keep the tour going, so just stick with it, I guess.
It's a long tour. There are 40 levels with 4 slightly different themes and some new enemies start showing up every time you progress to a new theme, but unfortunately the lack of speaker variety makes it too repetitive after a while.
It is great while it lasts, though. The rock'and'roll setting with some great tracks was what made me play through over 20 levels. It has all the basic enemy types, from fast to slow but tough and high HP bosses.
All in all, I recommend it to any rock fans specially because it's cheap enough, sitting at the 1 dollar price tag. Simple, cheap, fun to play. Get it on Steam if it rocks your boat.