Kerr Knoll "Perilous Swamp"
I was about 8 years old and it was coming up for xmas and I hunted around the flat we lived in for presents. I found a box in a plastic bag at the foot of my parents bed. When they were asleep I took the box through to the living room and unpacked the contents, a Sinclair ZX-81 with tape-deck, and a cassette with some instructions on it. I connected things up and loaded a this swamp game after a few tries. I tried to play it, then went to bed, putting everything back where I found it. On xmas morning my parents couldn't get this to work and I tried to show them how to set it up, but they wouldn't let me. I couldn't tell them that I had already done it. They took it back to the folk they bought it off. Can't remember what I got instead. My brother got a soda stream. It was the 80's.