Welcome LyndsWins! Did you learn of PB through steam? If so, welcome to the community! It's been a bit dry here the past few weeks. I am happy to see a new face! Currently, there is no way to customize lava. But I have found a way to create my own lava. What you do is create an enemy with your green lava animations and then use it in a course. Use at least 2 enemies for the lava base, and the top part. It has been suggested to be able to edit this somewhere. Anyway, again, welcome to the forums! And, don't forget to write an introduction!