User blog comment:Gamedezyner/Totally not a Shameless Advertisement/@comment-24650466-20130427160812

I know very little, But I know what levels to get lots of chaos drives. The first levels have lots of enemies and are short, City Escape, Metal Harbour, Radical Highway are the best levels for Sonic and Shadow. All of Tails and Eggmans levels are great for getting drives because there are alot of enemies, Weapons bed is especially good because it's short and there are huge amounts of enemies. Rouge and Knuckles' levels aren't good for getting Chaos drives. Thats the most helpful thing I know.