is the first in a series of arithmetic learning video games for the Nintendo Family Computer

Nintendo Entertainment System

The Nintendo Entertainment System is an 8-bit video game console that was released by Nintendo in North America during 1985, in Europe during 1986 and Australia in 1987...

. This video game is the prequel to Keisan Game: Sansuu 2 Toshi

Keisan Game: Sansuu 2 Toshi

is the second in a series of arithmetic learning video games for the Nintendo Family Computer.-Summary:This particular video game focuses on and , but also adds to the mix. It's a retro video game primarily meant for educational purposes, and as such there is little variety. Variations for and ...

and Keisan Game: Sansuu 3 Toshi

Keisan Game: Sansuu 3 Toshi

is the third in a series of arithmetic learning video games for the Nintendo Family Computer. This video game is a sequel to Keisan Game: Sansuu 1 Toshi and Keisan Game: Sansuu 2 Toshi.-Summary:...

.

Summary

This particular game focuses on the basics of and . It's a retro video game

Retrogaming

Retrogaming, also known as old-school gaming, is the hobby of playing and collecting older computer, video, and arcade games. These games are played either on the original hardware, on modern hardware via emulation, or on modern hardware via ports or compilations...

 primarily meant for educational purposes, and as such there is little variety. There are four modes, two for addition and two for subtraction. These modes each contain short mini-games where the player have to solve the displayed math problems. Even though this game is educational, players can only incorrectly guess five times before "dying" and given a game over

Game over

Game Over is a message in video games which signals that the game has ended, often due to a negative outcome - although the phrase sometimes follows the end credits after successful completion of a game...

 message. This methodology of learning replicated the "sink or swim" philosophy of teaching and would be used in the later games.