Thanks! It's a bit hard to have sets of structures without having them spawn wierd... But thanks for the feedback! Will definitely keep in mind the difficulty! :)
What else would you recommend to create a difficulty curve?
Hmm... maybe have small events that happen periodically to shake up things up? Like and earthquake that shakes the screen for snowballs from the sky (these are just examples and might not fit the theme you are going for), the events should probably happen more often the further you go.
