KanaMasasi

How to play:
- A 4x4 grid contains random numbers from 1 to 9.
- Players tap two adjacent cells (horizontal or vertical) to match them to their sum.
- If the sum equals the target value, a new cell is created with the new number, points increase, and the grid is refreshed.
- If time runs out, lose 1 life, add 10 seconds.
- Game ends when lives run out.

Mechanics:
- Easy: Time 100 seconds, total target is 10, 3 lives.
- Hard: Time 80 seconds, random total target from 8-12 each round, 3 lives.