User blog comment:Fairy27/Suggestion about the order of unlocking worlds/@comment-24579854-20151224113325/@comment-26826553-20151226163757

The real challenge is playing BWB first (suicide). A year ago, there was no second key. I was going through AE, then FC, then PS...Then I made the big mistake...I got stuck until I got rich enough (5000 coins) to buy powerups.

Now, with 680 K & free powerups, that wouldn't be a problem. But playing those BWB levels again? I'd rather not...