Talk:Treehouse of Horror XXV Event/@comment-194.18.184.15-20141013085306/@comment-25021853-20141013110643

Increases the shockwave radius, any other Rigellians caught in the shockwave get squished too, which makes taking out large clusters of them much easier. When visiting my neighbors I wait for 3 of the Aliens to get close together and then I tap on one of them and take all 3 out at once. It's kind of a fun mini-game that makes visiting my neighbors a little less tedious. There is a table of the upgrades at the bottom of the Treat Bags page (basically, it takes one more nail each Level, so Level 8 takes 9 Nails and Level 12 takes 13 Nails to upgrade). I'm at Level 12 right now and the shockwave is about as big as a 16x16 square plot of land and seems to get 10-20% bigger with each Level.