This one's a weird little NES game from Japan—basically a math drill disguised as a retro title. You get these timed arithmetic problems (aimed at 5th and 6th graders, hence the name), and the whole thing feels like someone turned a workbook into pixelated flashcards. The music’s got that classic chiptune charm, at least.

First few minutes? You’re staring at kanji numbers and trying to remember if Japanese kids really had to solve equations with a D-pad. Some of the problems actually trip you up if you’re rusty, though the multiple-choice helps. Not exactly an action-packed gem, but kinda fascinating as a time capsule of ’80s edutainment.

Definitely more of a curiosity than something you’d play for fun.