Keep the biggest tile in a corner
As long as your highest value stays anchored, the rest of the board is easier to stack into a smooth gradient.
2048 Guide
The board stays friendlier when your number order stays clean and predictable.
Layout Habits
As long as your highest value stays anchored, the rest of the board is easier to stack into a smooth gradient.
Frequent direction reversals scramble the middle fast. Pick a main flow and build around it.
If the center is starting to clog, rebuild room first instead of forcing one risky merge.