Muscarine or Erica's Trip

Muscarine is a psychedelic point & click adventure game. The main character is a young woman named Erica Evermore, who goes to sleep after consuming mushroom soup made from the large red mushrooms that grow near her tiny house. After a dream about walking down a long strange tunnel, she wakes to find herself in a surreal otherworldly version of her home. The world outside has changed dramatically too, and even her own body has transformed into some kind of alien creature.