Threes!
Threes is a puzzle video game like 2048.

use ⬆️ ⬇️ ⬅️ ➡️ to move combine numbered tiles.

The combined rule is:

1
➕
2
🟰
3


3
➕
3
🟰
6


6
➕
6
🟰
12


and so on...