Nice! Nice set up for a tower defender. It took a minute to figure out that I needed to press the backpack button to grab turrets and place them. I'm still not sure what the guy is doing when he cleans up the sludge. Is that how I'm getting gold? With some tweaking of the strength of turrets/enemies and some more enemies, seems like it could get more entertaining. I liked that one enemy "scales" to a bigger and bigger size.