Augmented reality. Horror. Night Terrors: The Beginning. **Top 5 iTunes Paid Overall Charts** **#1 Entertainment App In More Than 33 Countries** **Featured. Adults may recall a dream fragment they had during the sleep terrors. Also, nightmares generally occur in the last half of the night, while sleep terrors occur in the. Sleep terrors are episodes of screaming, intense fear and flailing while still asleep. Also known as night terrors, sleep terrors often are paired.