Ever stumble onto a weird Japan-only NES game and think, "Wait, what is happening here?" That’s this one. It’s a Doraemon game—y’know, the blue robot cat—but instead of cute adventures, you’re suddenly fighting zombies. Yeah. The controls are stiff, the graphics are basic even for 1990, and good luck figuring out what to do if you don’t read Japanese. But there’s something oddly charming about watching Doraemon panic while slapping undead with his little noodle arms. Not exactly a hidden gem, but definitely a "what were they thinking?" curiosity.

Fun fact: It came out the same month as Super Mario Bros. 3 in Japan. The contrast is… painful.