This is a tool for learning multiplication tables (times tables). I had one from my sister, so the roulette wheel is unused. The pencil that came with the DVD is missing, but I'll include a kanji sheet instead! The multiplication battle machine doesn't have the box or instructions, but it has batteries, so you can play with it right away. I don't think the operation is too difficult. Please use it to enjoy learning your multiplication tables. Please consider this, understanding that it has been stored at home.