8 Eyes is an adventure game for the NES, and is a single player experience. It was published by Seta.
8 Eyes is a commonly available game for the NES. It shouldn't be too difficult to find this game for purchase. In good condition, the game is worth about $5.99. 8 Eyes was released in 1988. The save feature for 8 Eyes is: Password save feature.
To see the three different endings, try the following passwords:ONAPPMBPPF, CKBPPAAPEE, or GBCPHAAHAD
There are a couple of them, actually. Try either of these: