A youtuber has posted video of him documenting EGM going to the Tokyo Toy Show in 91.Guess they had him do this in case they needed screen grabs or refrence. Its 3 parts and in this 2nd part we see Rockman 4 beta with cut Egyptian boss in action. Rest of video they visit sega's booth and lots of games in beta state. What's interesting is mega cd is shown off there and you get to see an early mega cd bios/tech demo screen as well as led lights on front with different colors. In the other videos it gets interesting as you get to see other parts of the show including a tiny floor with smaller devs showing their games off on proto boards. My favorite is the bare boards put in super famicoms taped over onto the console.