Here's something that's really worth a play!
Too bad it was also quite rare. This is "Sonic Space Tours", and it is more than an arcade machine, it's a prize dispensing game! If you win it, it will give you a prize. The prizes were Sonic Keychains! (Specifally, the name-plate 3D Figural Sonic and old-style 3D figural Amy Rose) The keychains can be seen on Japan Keychains. You can see them in the top plastic parts of the machines. They come out of the dark area on the front.
These are both the same game, just the one on the right was updated in 1999, where it added some kind of interactive wheel. The game is of course Japanese, but it was so rare that no one knows what it does, or what you had to do to win it. Anyone play this thing? Write in with your experience!
The left photo is actually a screen shot, provided by the game Sonic Gems so that people could see obscure machines. The right is a real picture of the machine & you can clearly see who is inside & the SA1 artwork on it.