I built a browser number strategy game where arithmetic becomes board control

The idea

Most math games feel like timed quizzes: answer fast, move on, repeat.

I wanted to build something with a different texture. In Number Duel, arithmetic is not the homework you do before the fun starts. It is the move system.

You pick numbers to shape the board, limit your opponent, and set up future threats. The math is simple enough to play immediately, but the choices start to feel surprisingly tactical.

How it works