mind-blowing
1. [ adjective ] (informal) intensely affecting the mind especially in producing hallucinations
Synonyms: mind-bending
Related terms: colloquialism psychoactive
2. [ adjective ] intensely affecting the mind or emotions
Examples:

"spending a week in the jungle was a mind-blowing experience" "a mind-blowing horror story"

Related terms: emotional
Similar spelling:   mind-boggling
  mind-bending