In Percy Jackson what is the magic used in the Lotus Hotel?

In the movie it showed me, Annabeth and Grover eating the Lotus flower and they put us in a trance and we didn't leave the hotel for days as we were trapped. In the book we didn't eat anything (I may have ate at the cafes and Grover from the fridge) but still got put into a trance and it seemed to come from the games or activities themselves. Does anyone know what magic this is? I'm asking this because I think Rick is using it in the books. I can't get away from them...It's like I'm in a trance!