My friends and I used to play Knightmare all the time!
We'd watch it of a Friday and absoulutely love it.
What was great fun was if some of us liked a particular Dungeoneer and the rest of us didn't. Made more interesting.
We would always play Knightmare during playtime or lunchtime (It was of course a few years before I got to secondary school and used the term 'Break'!).
Our field was pretty good, and had a couple of Oaks and a seperate little claering which we weren't supposed to go in.
It was a bit creepy, which of course made for excellent Knightmare play.
We were all of a great imagination, so creating rooms, puzzles, traps was never that hard.
When the board game came out, we would use the riddle book, as that did have some great riddles in it.
It was even more atmospheric when we would play on a Friday evening.
Bear in mind it would be Winter time, so outside was nicely dark and scary.
Sadly however, using my Go-Kart never quite the same thrill as the mine cart...