Loop Invader

My entry for the Ludum Dare #47 Compo There are invaders hiding among your data! Use your observation skills and code blocks to track them down and hit em with your ZAPPER! PERFORMANCE ISSUES: if you are experiencing lag, please download the native version for your operating system. The HTML5 version seems to struggle a bit. How to play (TLDR version) Each level has a bunch of balls in a grid. One or more of those balls are an "invader". You need to figure out which balls are invaders, and then ...