This game is rated ESRB: Everyone.
Professor Kageyama's Maths Training is an educational title released in 2008 for the Nintendo DS, designed to sharpen fundamental arithmetic skills. The game is based on a Japanese teaching method that develops numeracy through structured calculation exercises, presenting players with number-filled grids that must be completed accurately. The curriculum spans 20 difficulty levels and includes 40 distinct exercises, covering the core operations needed to handle more complex problems such as multi-variable equations. The progression system allows learners to build confidence gradually, moving from basic calculations toward more demanding challenges. By grounding its approach in a recognized pedagogical framework rather than conventional game-based reward systems, the title functions primarily as a practical training tool aimed at reinforcing everyday mathematical competence.