Every once in awhile a silvery semi-transparent cookie appears and it is called the 'Dream Cookie'. Dream Cookies act similar to Golden Cookies, except they are super rare. Dream cookies, when clicked on, trigger a 'Dream Frenzy' where the cps multiplier is x100, and lasts for 77 seconds. Dream Cookies are not affected by any golden cookie buffs or nerfs. There are a few new achievements as well.
'Dream Cookie' Click a Dream Cookie
'Day Dreams' Click 7 Dream Cookies
'Dreams all day long' Click 27 Dream Cookies
'You start to never wake up anymore' Click 77 Dream Cookies
'Impossibly long dream' Click 1,000 Dream Cookies
When you ascend, there are new unlockables. After you unlock 'Decisive Fate' a new unlockable opens up for the Dream Cookie. it is:
'First Dream' costs 10,007 heavenly chips Dream Cookies appear 5% more often. 'So Dreamy'
After First Dream comes this one:
'24 hours of Dreams' costs 100,007 chips Dream Cookies stay 5% longer. 'Give up your life for Dreams...'
After 24 hours of Dreams comes this next one:
'Dreamy Grandmas' Every 100 Grandmas increases your chance of seeing a Dream Cookie by 1%. Grandmas get a +1% cps per Dream Cookie clicked. 'Dreaming on the job'