Rating: 4.8/5
Tennokoe Bank is a memory backup card made by Hudson Soft for the PC Engine Duo. Made in 1991, the Tennokoe Bank card allowed players to backup save data for any game that uses a save system. The card was inserted into the system itself as if it were a game and save data on the Duo could be backed up through navigating an user interface designed like a game menu. It's important to note Tennokoe Bank itself is not a game so you should only "play" this if you're interested in learning more about add-ons for the PC Engine.
You also need an emulator to run this game. To grab one quickly, please check out our TG16 emulators section.