Thanks - "easy to start" is the part I spent the most time on, so that one means a lot.
To answer what's next: there are 15 levels and then endless towers after them, and the later chapters bring in new torch types and new things that catch fire. If you got through the early ones quickly, the back half is where it stops being gentle.
PAPER SNIPES is on my list - I'll come leave you a proper comment.