Click the boom button for eruption; use slider to adjust power. There is a glitch, Which I have no idea how to fix, (nor do I want to) where if you click the boom button 2 times quickly, it spews tons more lava than intended, then makes a huge cloud of smoke. in other words, DOUBLE CLICK BUTTON FOR LOTS OF FUNZ
I just kinda thought a volcano simulator would be cool. So... this happened.