Did you ever try plying them without the glasses? Now that’s a headache!

I had a Master System as a kid and was disappointed when I purchased Maze Hunter 3D and brought it home only to find I could not play it without the glasses. No wonder they were discounted.

However, I did read in a book that Space Harrier 3D had an Easter egg that allowed you to disable the 3D feature, but you had to get on the high score screen to execute the code. I ended up buying that at a discount. I got quite good at getting through the first level of the game without the 3D glasses.