Boulders=Balloons is a cheat that will substitute boulders with balloons. Like all cheats, it is activated in the options menu. Once you have activated it, you can't submit your scores or add to your permanent stats. Planet D is the only speedrun that has the Boulders=Balloons Cheat normally activated.
Note: if enabled you cannot get milestones, can't submit your high score or add your permanent stats.
With this cheat, the boulders will come in different pastel colors (pink, orange, yellow, green, purple and blue) and will act like there's not gravity.