Here are 10 free number games that you can play to train and challenge your brain:

Sudoku

Sudoku

Kakuro

Kakuro

2048

2048

KenKen

KenKen

MathDoku

MathDoku

Calcudoku

Calcudoku

Numberlink

Numberlink

Futoshiki

Futoshiki

Prime Climb

Prime Climb

Number Search

Number Search

These games can help improve your numeracy, logical thinking, and problem-solving skills while providing an enjoyable and engaging way to train your brain. Many of these games are available as mobile apps or can be played online.