Okay, so this is one of those weird little Japan-only Doraemon games for the Game Boy Color. It's basically a math drill disguised as a game—you're helping Nobita (the perpetually failing student from the manga) practice his multiplication tables ("kuku" means times tables in Japanese).

It's exactly as dry as it sounds, but there's something charming about the chunky pixel art of Doraemon characters cheering you on while you frantically input answers. The music is that classic GBC bleep-bloop stuff, and the questions get faster if you do well. Honestly, I only played it for the nostalgia hit—definitely not for the math practice.

If you're collecting obscure Doraemon games or just want to see what Japanese edutainment looked like in the late 90s, this is a weird little time capsule.