Keisan Game: Sansuu 1-nen

Keisan Game: Sansuu 1 Nen is an educational game focused on first-year arithmetic. It includes four mini-games that present addition and subtraction problems through different activities.

• Addition 1: Drive a car into the number that solves the problem.
• Subtraction 1: Guide a rabbit to the correct number, then escape a garden while avoiding worms.
• Addition 2: Drill the correctly numbered tooth while avoiding a cavity creature.
• Subtraction 2: Fly the correctly numbered hot-air balloon into a frame carried by a bird.

Correct answers increase the score, while incorrect answers, collisions, and other hazards cost a try. Losing all five tries resets the score. Each mini-game has two difficulty levels and supports alternating two-player play.